Engineering, Product and Design Startups funded by Y Combinator (YC) 2025

GitLab is the first single application for the entire DevOps lifecycle. Only GitLab enables Concurrent DevOps, unlocking organizations from the constraints of today’s toolchain. GitLab provides unmatched visibility, radical new levels of efficiency and comprehensive governance to significantly compress the time between planning a change and monitoring its effect. This makes the software lifecycle 200% faster, radically improving the speed of business. GitLab and Concurrent DevOps collapses cycle times by driving higher efficiency across all stages of the software development lifecycle. For the first time, Product, Development, QA, Security, and Operations teams can work concurrently in a single application. There’s no need to integrate and synchronize tools, or waste time waiting for handoffs. Everyone contributes to a single conversation, instead of managing multiple threads across disparate tools. And only GitLab gives teams complete visibility across the lifecycle with a single, trusted source of data to simplify troubleshooting and drive accountability. All activity is governed by consistent controls, making security and compliance first-class citizens instead of an afterthought. Built on Open Source, GitLab leverages the community contributions of thousands of developers and millions of users to continuously deliver new DevOps innovations. More than 100,000 organizations from startups to global enterprise organizations, including Ticketmaster, Jaguar Land Rover, NASDAQ, Dish Network and Comcast trust GitLab to deliver great software at new speeds.

PagerDuty is an operations performance platform delivering visibility and actionable intelligence across the entire incident lifecycle. Their SaaS-based solution empowers over 10,000 small, mid-size and enterprise global customers such as Comcast, eHarmony, Slack and Lululemon with the insight to intelligently respond to critical disruptions for exceptional customer experience. PagerDuty was founded to deliver a new and innovative approach to increase business response and efficiency. When brand reputation depends on customer satisfaction, PagerDuty arms businesses with the insight to proactively manage incidents and events that may impact customers across their IT environment.

Our mission is to make every search interaction meaningful & rewarding, through developer-friendly and enterprise-grade APIs. Algolia is the leading Search & Discovery API for websites and mobile apps. We help the most innovative companies across e-commerce, media and SaaS industries create powerful, relevant and scalable discovery experiences for their users. Unlike other solutions, our hosted platform reduces the complexities of building and scaling a fast, relevant digital experience and helps teams accelerate development time. More than 9,000 companies like Under Armour, Twitch, Periscope, Medium and Stripe rely on Algolia to manage 50+ billion search queries a month. Founded in 2012, we're backed by $184M in funding from Accel Partners, Alven Capital, Point Nine Capital and Storm Ventures. The team is headquartered in San Francisco with offices in Paris, London, New York, and Atlanta. To learn more, visit www.algolia.com. --- We’re looking for talented, passionate people to build the world’s best search technology. As an ownership-driven company, we seek team members who thrive under autonomy and diversity. We're committed to building an inclusive and diverse workplace. We care about each other and the world around us, and embrace talented people regardless of their race, age, ancestry, religion, sex, gender identity, sexual orientation, marital status, color, veteran status, disability and socioeconomic background

The world’s largest omnichannel communications platform. Bird CRM powers communication between businesses and their customers — across any channel, always with the right context, and on every corner of the planet. Its products and solutions are the foundational building blocks to business communications across preferred channels, like SMS, Voice, WhatsApp, WeChat, Messenger, Email and more. Founded in 2011, Bird connects to billions of devices and is trusted by nearly 20,000 customers worldwide. Headquartered in Amsterdam, Bird operates across nine global hubs — including Singapore, Dublin, Shanghai, Sydney, London, Bogota and Asuncion — and is proud to be a “Work Anywhere” company. Its team of 500 employees represent more than 55 nationalities.

At Optimizely, we're on a mission to help people unlock their digital potential. We do that by reinventing how marketing and product teams work to create and optimize digital experiences across all channels. With Optimizely One, our industry-first operating system for marketers, we offer teams flexibility and choice to build their stack their way with our fully SaaS, fully decoupled, and highly composable solution. We help companies around the world orchestrate their entire content lifecycle, monetize every digital experience and experiment across all customer touchpoints – all through Optimizely One, the leading digital experience platform that powers every phase of the marketing lifecycle through a single, AI-accelerated workflow. Optimizely has nearly 1500 employees across our 21 global offices and has 700+ partners. We are proud to help more than 10,000 businesses, including H&M, PayPal, Zoom, and Toyota, enrich their customer lifetime value, increase revenue and grow their brands. At Optimizely, we live each day with a simple philosophy: large enough to serve, small enough to care. Learn more at optimizely.com.

Flock Safety provides the first public safety operating system that empowers private communities and law enforcement to work together to eliminate crime. We are committed to protecting human privacy and mitigating bias in policing with the development of best-in-class technology rooted in ethical design, which unites civilians and public servants in pursuit of a safer, more equitable society. Our Safety-as-a-Service approach includes affordable devices powered by LTE and solar that can be installed anywhere. Our technology detects and captures objective details, decodes evidence in real-time and delivers investigative leads into the hands of those who matter. While safety is a serious business, we are a supportive team that is optimizing the remote experience to create strong and fun relationships even when we are physically apart. Our flock of hard-working employees thrive in a positive and inclusive environment, where a bias towards action is rewarded. Flock Safety is headquartered in Atlanta and operates nationwide. We have raised $150M in our Series E led by Tiger Global at a $3.5B valuation.

Cognito is the highest converting ID verification system on the market. By starting with just a user's phone number, Cognito can verify their name, date of birth, address, phone, and Social Security Number. The strong link formed between a user and their phone number builds trust while reducing friction.

Acquired by Pluralsight in May 2019

Scale accelerates the development of AI within organizations of any size to deliver critical business insights and operational efficiency. Its data-centric infrastructure platform leverages RLHF (Reinforced Learning with Human Feedback) to help organizations build the strongest AI models that supercharge their business, with customers across industries including Meta, Microsoft, U.S. Army, DoD’s Defense Innovation Unit, Open AI, General Motors, Toyota Research Institute, Brex, Instacart and Flexport.

Better Code Reviews, Less Hassle, All in Slack Axolo takes your team's code review practices to the next level, integrating seamlessly with Slack to deliver real-time notifications and natural discussions.

Compyle is a less autonomous coding agent that asks before it acts. We're like Cursor or Claude Code - but you won't need to rewrite your codebase every time you use it for more than a small task. We built Compyle because we were frustrated with the direction other coding agents are headed. They're all racing to be more autonomous, running for hours without human input. This doesn't work for real production code. When agents run autonomously, they make countless small decisions that pile up in your codebase. Engineers lose ownership - they don't know what was implemented, can't effectively debug or maintain it, and struggle to build on top of it. The code becomes a black box, and they're forced to throw it away. Compyle keeps engineers in the driver's seat.

We're 2 repeat YC founders. We founded Plato (W16, sold to Coda) and Wolfia (S22). Quang lead Product/GTM for Coda Solutions and Fabien is ex-SWE at Meta and lead Engineering at Wealthfront before. We’re building Vybe: "Lovable for internal apps". We come with pre-built building blocks: Integrations (Gmail, Gcal, Github, Jira, etc.), SSO and AI tools (Websearch, Summarization etc.) so anyone in a company can build and launch internal AI-powered apps. Vibe coding is dramatically lowering the barrier for non-technical users to create full web apps. Lovable, Replit, Bolt, Google, Canva, Figma all launched their vibe-coding platforms. People love them. They're great for prototyping, but it's difficult to roll out inside a company for internal use cases for those reasons: 1. Data: If you want to connect your existing data (e.g. Salesforce, Gmail, Jira), you'd need to rebuild the API auth, pagination, etc. 2. SSO: If you build 20 apps, you'll have 20 different logins 3. Security: AI-built apps have massive risk of exposing data, especially if built by non developers So companies are stuck in the old world: clunky spreadsheets, rigid SaaS solutions or complex no-code tools. Time to build!

Ultralight is a GPU-accelerated toolkit to embed modern HTML in games and native apps. Available for C and C++ on Windows, macOS, Linux, Xbox, PlayStation, ARM64 devices, and more. Developed in collaboration with leading game studios, built GPU-first on a new, lightweight fork of WebKit.

CircuitLab makes it easier for electrical engineers, students, and electronics hobbyists to design, analyze, build, and share electronic circuits.

Stably AI auto-writes, runs, and maintains end-to-end tests directly in your CI, guarding every pull‑request and production release—no flakiness, no test maintenance. Hundreds of modern engineering orgs already use Stably to merge code in minutes, replace brittle Playwright/Cypress suites, and slash QA spend by up to 80%. Stably offers - AI-generated test flows that mirror real user journeys. - Diff-aware execution—only tests affected by your change run, so CI stays under five minutes. - Automatic selector & assertion healing when your UI shifts, keeping the suite green. - Plain‑English editor letting PMs and QAs add tests without writing code. - One‑click GitHub App or API for instant pipeline integration.

Boundo uses generative AI to replace SDRs. Tell our platform who you're looking for, and it will find and contact high quality sales leads in a fully automated way! We’ve tuned our models to write near-human outbound sales emails with proven conversion. Best of all, we're using our own tool to do all of our sales.

Louiza Labs build digital twins of real customers so brands can get preference data on demand with an end-to-end platform connecting consumers, manufacturers, and f&b brands.

We are building Siri for work, but it actually works. Caddy turns your voice into the next computing interface. It understands what’s on your screen and your intent, so work gets done while you stay in flow. Say “create a Linear ticket and share it to Slack” and Caddy handles it instantly in the background. Caddy’s founders previously led product and design for Loom’s AI suite and core products. We believe the next era of computing will be powered by voice, where computers understand what you say and what’s on your screen so work happens naturally.

DeepSim is building an AI physics simulator. We are currently developing the only thermal simulator to meet AI chip design needs and are validating our tool with Intel. We are a team of three electrical engineering PhDs from Stanford with backgrounds in semiconductor fabrication and design.

Almost every company that has to integrate with the legacy financial institutions, faces several challenges when it comes to the product cycle. Not only are the APIs and documentations less available, but they are also old school and ridden with errors and loopholes. On top of that, the lack of a single point of contact from the underlying institutions, makes the already long integration cycle of 5 months feel like a temple run between different departments. And since those services break and update over time, you can imagine the nightmare in terms of coordination between the tech teams. We are a full-stack platform where you can come, select your desired modules, play in the sandbox, and launch your product with the APIs and SDKs within a couple of weeks! Not only that, but we also take care of all upcoming fixes, iterations, and updates without breaking any flow. It's that easy, as it should be. Welcome to the future.

Stellon Labs is an AI research lab that is building tiny frontier AI models that can run on edge devices like smartphones, wearables and embedded systems. Our first open source model, KittenTTS, is a super-tiny text-to-speech model, that got 8K Github stars and 45K model downloads within 2 weeks of launching.

HUD (YC W25) is developing agentic evals and RL environments for Computer Use Agents (CUAs) that browse the web for frontier AI labs. Our CUA Evals framework is the first comprehensive evaluation tool for CUAs. People don't actually know if AI agents are working reliably. To make AI agents work in the real world, we need detailed evals for a huge range of tasks. We're backed by Y Combinator, and work closely with frontier AI labs to provide agent evaluation and training infrastructure at scale.

Versive is an all-in-one research platform that helps teams make faster customer-informed decisions. - Collect richer insights: AI-moderated studies that deliver interview-quality results at the survey speeds - Accelerate your analysis: AI-assisted analysis that instantly turns transcripts into shareable insights

Tusk (YC W24) is an AI agent that helps developers generate unit and integration tests with codebase context. Tusk sits in CI and provides automatic coverage whenever software engineers raise a PR. Engineering teams use Tusk to prevent critical regressions while increasing test coverage.

Fastshot is a no-code mobile development platform. Our mission is to "Democratize mobile app creation with AI" Anyone can develop a mobile app from idea to App Stores within days just by chatting with AI.

The future of coding isn't writing more code. It's delegating the boring parts, so you can build the interesting stuff

Metoro is an observability platform specifically for service architectures running in Kubernetes. With no code changes or instrumentation you can get total observability into you clusters and the apps running inside of them. The entire installation takes < 10 minutes. Out of the box you get: Traces, Metrics (infrastructure, application and language level), Logs, Continuous profiling, Regression tracking, Network traffic inspection, Infrastructure monitoring, Alerting, Automated diagnostics

Helium is building self-improving software — AI that continuously experiments on key moments in the user funnel to boost revenue. Our first customer, a social app with 20M MAU, uses Helium to test new in-app paywalls to get more users to subscribe. Zach previously made $100M+ in growth experiments at Uber, Shishir led the first LLM features for Alexa, and Anish worked at Meta building ML to automatically experiment on ads, increasing Instagram ads conversion by 10%.

Sourcebot is an open source code understanding platform for massive codebases. We’re used by thousands of engineers in some of the largest companies in the world, including NVIDIA, Red Hat, Wikimedia, and Arista Networks. Understanding code, not writing it, is the primary bottleneck for large engineering teams. For developers, this means onboarding onto complex codebases faster. For AI agents, it means getting the necessary code context to minimize hallucinations and maximize cohesion within the wider codebase. Sourcebot solves this by giving developers and AI agents the ability to regex search across millions of lines of code instantly, as well as ask questions across thousands of repos using any flagship reasoning model. Being open source and on-prem, we can get deployed in enterprises within minutes before other tools even get approval. We met a decade ago at McGill University and have been building together full time for over 2 years. We’ve personally felt the pain of understanding large codebases while working at Microsoft, EA, Ubisoft, Google, and Meta.

Relace makes it easy to deploy production-ready coding agents. Our models are co-optimized with infrastructure to achieve SoTA performance: 10k+ token/s code merging and retrieval across million-line repositories in seconds.

Macadamia builds AI agents for complex engineering projects. They automate both engineering & business processes, to automate away all low-leverage work. It integrates with all engineering data sources, technical documentation, and third-party software tools. Macadamia serves customers in mechanical engineering, manufacturing, and construction.

Decipher learns from session replays and writes reliable tests that prevent regressions on all your product flows. Plus get alerted when a bug hits production users.

At Raven, we are building AI assistants for manufacturing plants which can offer intelligent assistance for day-to-day operations like training, job planning, troubleshooting, reporting and also helps with real-time analytics — all while seamlessly integrating with your existing systems. We’re taking decades of manufacturing expertise and combining it with AI to solve real operational problems. We’re a small, focused team working to make industrial operations safer, smarter, and more efficient.

MagnaPlay is game translation simplified into SAAS. Every game needs to be translated - a process which currently consists of finding freelancers, verifying their quality, negotiating prices, building contracts and waiting months for them to deliver. With MagnaPlay, game developers cut out the middleman and get results 5x faster, at half the price and with more reliable quality. Our combination of AI, expert translators and SAAS fully integrates translation into the gamedev workflow, ensuring games are translated and reach the worldwide audiences that love them so much.

Hera is an AI motion designer that turns 5-hour projects into 5-minute tasks. When you're a YouTuber making an infographic animation, instead of spending hours manually clicking buttons in Adobe After Effects, you can create the same animation in minutes in Hera. Through talking to our users, we realized that 95% of time spent on motion graphics is manual button clicking, not creative work. This insight led us to focus on automating the tedious parts while giving the user all creative control. We launched in May 2025, got 100k waitlist signups in 8 weeks, and we're doubling revenue monthly.

Topological is developing physics-based foundation models for CAD optimization. We help hardware teams iterate at the same speed that software teams do. Our technology is accelerating the engineering workflow with AI and scales design and optimization to identify the ideal designs for complex problems given their physical constraints with enhanced speed and performance. Our first model, UToP-v1, is a SOTA topology optimization model that understands physics, geometry, and manufacturability. It can generate the most efficient design given a problem’s physical requirements. It has <5% compliance error and is 1930x faster than current methods. We're reimagining mechanical engineering and computational design with precision spatial AI.

A platform for engineers to build and run backend services and APIs, where engineers don't read or write any code at all. Instead they work only with natural-language specifications and tests, that are then built by AI behind the scenes.

Build and publish user interfaces quickly.

Povio is helping founders turn visions into digital realities. With over **1,000 successful projects** under our belt and a robust team of over **200+ skilled professionals**, we are the powerhouse of innovation and design. We've partnered up with over **60 YC founders**, so we get the unique challenges you face and what it takes to build something great. A proud YC Winter 2014 alum, Povio has a legacy of startup success. Our portfolio spans diverse industries, offering bespoke solutions to giants like **Volkswagen**, rising stars like **Flexport**, and notable figures including **Serena Williams** and **Arnold Schwarzenegger.** **Why choose Povio for an extra hand with your project?** Our **400+ happy customers** and a **90% referral rate** speak volumes about our commitment to excellence. We make the software development and product design processes a seamless and delightful experience, with every project backed by top-tier managers and quality assurance analysts to ensure smooth and efficient delivery. Whether you're scaling up, launching new products, or optimizing current systems, povio.com is dedicated to propelling your growth.

Dockup gives on-demand environments for engineering teams so they can merge pull requests with confidence. It works like CircleCI, but allows you to manually test and see each code changes in action with your entire tech stack without having to mock any of your services.

We supercharge agents from Cursor to AgentKit with product and team-level context. Connect us once to where your internal data lives, then create secure data gateways with granular cross-platform permissions, comprehensive monitoring, and robust security filtering.

DataShare is a data-as-a-service platform that lets you embed charts, dashboards and exports directly into your product. For example, if you run an accounting startup, DataShare would enable you to embed a full profit and loss dashboard, with downloadable statements. DataShare is backed by an enterprise-grade data warehouse, and can be implemented in fewer than 20 lines of code.

NuMind is a tool for data scientists, data analysts, but also software engineers to create custom NLP models. For example, a recruiting company uses NuMind to find which job offers best match a given resume. Etienne (CEO) was head of Machine Learning at Wolfram Research, and Samuel (CTO) co-founded Make.org (8M users). NuMind originated from our own frustration when developing NLP models. Leveraging large language models similar to GPT-3, NuMind allows to complete NLP projects at least 10x faster than before. We launched a private beta August 2 and had 9 paying customers one month later.

When the public cloud appeared migration was easy. Existing apps running on physical servers could just be moved to virtual machines running in the cloud. The cloud is now moving towards serverless, and serverless is not backward compatible. New tools need to be created and existing apps need to be rewritten. Webiny provides developers with everything they need to build those serverless apps. We are a 100% remote team.

Semble AI automates fire-life-safety design. Instantly generate code-compliant device layouts, bills of materials (BOMs), and quote estimates. Replace guesswork with AI - getting it right the first time and allowing teams to produce bids in minutes, not weeks. No missed devices or materials. No regulation lookups. No back-and-forth with permitting authorities. No overrun cost surprises. Semble AI is the new standard for fire-life-safety.

GitStart accelerates software engineers with Pull Requests as a Service. Assign tickets to GitStart Bot, go to sleep, and wake up with PRs. GitStart Bot automatically manages thousands of AI models and full-time engineers and runs peer reviews until PRs are ready to be merged. It’s scalable, flexible, and quality is guaranteed: you only pay for merged PRs.

nCompass is a platform for acceleration and hosting of open-source and custom AI models. We provide low-latency AI deployment without rate-limiting you. All with just one line of code.

Veriff is a global online identity verification company that enables organizations to build trust with their customers through intelligent, accurate, and automated online IDV. Veriff’s intelligent decision engine can analyze thousands of technological and behavioral variables in seconds, matching people to more than 10,000 government-issued IDs from over 190 countries. Veriff serves a global portfolio of organizations across fintech, crypto, and mobility sectors. Founded in 2015 by Kaarel Kotkas, today Veriff serves a global portfolio of internet businesses including fintech companies, sharing economy providers and marketplaces in the USA, Europe and other places in the world. Veriff is an alumnus of the startup accelerator Y Combinator and employs 350 people in its locations in Tallinn and Tartu in Estonia; New York, in the USA, London in the UK and Barcelona in Spain.

Rutter is the unified API infrastructure powering the next generation of B2B fintech. We help tech-forward companies build seamlessly integrated financial products by connecting to their customers' systems of record, from accounting platforms to e-commerce systems. The financial operations landscape is fragmented across hundreds of platforms (QuickBooks, NetSuite, Shopify, Stripe, etc.). Without Rutter, companies must spend thousands of engineering hours building and maintaining these critical integrations. Our Universal API provides the same level of granularity as direct integrations while using a single, consistent schema. This enables our customers to build end-to-end workflows for financial planning, lending, expense management, AP/AR automation, and more, in days, not months. Leading fintechs like Mercury, Airwallex, and Orb trust Rutter to power their integrated financial solutions. Learn more: https://www.rutter.com/

We realized that S3 is kind of like "git for data" and have created services that make S3 function as a data hub for teams. Quilt consists of a Python Client, a web catalog for browsing and visualizing S3, and a CloudFormation backend for compute and identity management.

Firebender is a free and privacy-first Android Studio AI assistant. One-click install from the IntelliJ plugin marketplace to your IDE. It has context over your codebase and lets you use the best models for asking questions, debugging code, and generating code snippets. Unlike other AI assistants with outdated Android knowledge, Firebender continuously updates its knowledge base with the latest Android SDKs, libraries, and best practices, providing more accurate and relevant assistance for Android development.

Replit is the world-leading collaborative browser-based development environment -- learn, create & deploy! Join a community of 20m+ developers.

Subtrace is a zero-code network tracer. It's like having an inspect element button for your whole infra: when you start a process with Subtrace, you'll see every HTTP request coming in and going out in realtime. Under the hood, it uses BPF to make this possible without any root privileges or code changes. We have ~2.5k stars on Github.

Jet Admin - an app builder designed specifically for creating internal tools, admin panels, external portals, inventory apps, and other business applications really fast and without coding. In Jet Admin, you can assemble multi-page apps with complex user flows, connected to multiple data sources. Setting up custom layouts, adding custom actions and workflows, binding and transforming dynamic values, using conditional rules and validations - all is done through a drag & drop and point & click visual builder. We’ve also added a variety of developer tools, so whenever necessary, you can create custom SQL and HTTP queries, write JavaScript, create multiple environments, code, and embed custom UI components.

Accelerate software development with WarpBuild. Get 30% faster, 90% cheaper CI builds in 30 seconds using WarpBuild cloud runners for Github Actions.

Bitrig is the only vibe coder that writes native Swift, which is how the top mobile apps are coded. It's like Lovable for iPhone apps. Kyle and Jacob are creators of SwiftUI, Apple's UI framework for building modern iOS apps, and led its development for the past 10 years. Tim was co-founder and designer of Storehouse, where he won an Apple Design Award and was later acquired by Square. Download bitrig from the App Store: https://apps.apple.com/us/app/bitrig/id6747835910

Every successful tool is a bet on efficiency. A waterwheel grinds more grain per unit effort than a quern. A transistor switches more operations per watt than a vacuum tube. This is civilization's pattern: do more work with less energy. For ten thousand years, efficiency meant physical work. Intellectual work rode the surplus. Better farming, manufacturing, transport. But the brain itself bottlenecked every intellectual task. Compute changes this. For the first time, we can drive efficiency gains in intellectual work directly. Any repeatable job with measurable output has an efficiency ratio. Useful work divided by energy consumed. Intelligence per watt. Humans perform tasks at some quality-weighted outcomes per kilowatt-hour. AI systems do the same jobs. We can measure both the same way. AI is crossing the human baseline. Domain after domain. The world's hardest problems are information problems, and human intelligence is no longer the limit. The cost of intelligence per unit of energy is the limit. Every order of magnitude drop in cost expands the set of solvable problems. Our mission at Wafer is to maximize intelligence per watt by using AI to optimize AI infrastructure, achieving thousands of times better energy and cost efficiency. We want people to do their life's work here in pursuit of radical abundance. We believe cheap intelligence is the most essential piece of technology for a future of abundance. We will build the future with intelligence "too cheap to meter."

Plexe builds predictive ML models from a problem description. It connects to data sources, conducts experiments, evaluates and deploys the models to an API endpoint.

Manage the words across your team’s product from design to production.

Aviator is a developer tool that automates merge workflows and keeps builds healthy. Engineers save up to 5 hours a week and avoid frustration of broken builds. Our users include Slack, Bosch, Lightspeed, Square, Benchling, Figma and many others. For instance, Slack went from 180 master-build failures per quarter to just 1 build failure when they started using Aviator. Our goal is to become the leading brand for developer experience.

Nextmv is a DecisionOps platform that accelerates optimization AI teams with tools for deployment, testing, CI/CD, collaboration, and management of decision models. With Nextmv, developers can create scalable, custom decision services complete with unique API endpoints and options to integrate with popular solvers and modeling solutions.

Streamstraight ensures your users never see an interrupted LLM response. We solve the problems around resumable streams and reconnecting during an in-progress AI response, so you can ensure your long-running AI agents responses are never interrupted on the frontend. If you… * show an incomplete response when users return to an AI chat that's still in-progress * have users who request multiple long-running AI responses, simultaneously * lose data when a client reloads the page during a stream * deal with flaky connections due to mobile clients * want to run LLM inference from an async job * want to stream the same LLM response to multiple browser tabs/clients …message us! We can fix these issues and ensure your frontend stays high quality during long-running streams.

BootLoop is building the first AI agent to write and test firmware on real hardware. Existing AI coding assistants fail completely with embedded systems, but our agent ingests datasheets, schematics, and other design files to write firmware in your style and automatically test it on your hardware.

Data science is as much a scientific and creative process as it is an engineering one. It involves working together, failing, learning and going back to the drawing board. Data scientists are explorers. To make data projects successful, we need tools that are both powerful and easy to use. Tools that help us collaborate and share our work in an engaging way. Tools that make data science fun again. At Deepnote, we’re building a new standard in data tooling — a notebook that brings teams together to explore, analyze and present data from start to finish. We are building tools for explorers. Join us.

Shogun is an ecommerce experience platform empowering brands to drive higher conversions, revenue, and brand loyalty. Our products Shogun Page Builder and Shogun Frontend help teams build and optimize their online stores to deliver exceptional experiences. Our products integrate with ecommerce platforms like Shopify and BigCommerce, and our 20,000+ customers include Leesa, MVMT, Timbuk2, and Chubbies. Visit www.getshogun.com for more. We're an inclusive, remote, diverse, and globally distributed team. And we’re hiring!

Blink is the fastest way to build and launch web apps—no coding required. Our AI-powered platform lets anyone create full-stack apps in minutes: just describe what you want, and Blink handles design, database, backend, hosting, and authentication instantly. Apps are fully editable, remixable, and deploy with one click to a live site, including custom domains and monetization. Builders, startups, and creators use Blink to launch MVPs, internal tools, SaaS products, and websites up to 20× faster—no developers needed. Each app is shareable and remixable, powering viral growth. Blink is “Shopify for web apps,” making software creation as easy and fun as making a TikTok.

Surge is Stripe for telephony. Our team has experience building telephony software at billion dollar scale. Because of increased regulation, Twilio and other SMS APIs take weeks to onboard new customers, but we can get startups onboarded same day. Surge wins by enabling easy carrier registration, better support, and higher level APIs and no code UI components to make implementation easier for startups and developers.

Customers expect your SaaS to integrate with all the software they use. With Nango, you ship integrations your customers love, fast. Leverage hundreds of pre-built integrations and unlimited customization.

Athina is an end-to-end platform for product teams building production-grade AI features. 1. Prototype: Dynamic Columns let you run LLM prompts, execute code, make API calls, retrieve data, run transformations, and more (in a spreadsheet UI) 2. Evaluate: Run evaluations within the sheet itself - there are 50+ preset evaluation metrics or you can create your own custom evals (no-code). 3. Experiment: Change your prompt, model, retriever, or chain in just a few clicks. Technical users can run even more experiments programmatically. 4. Compare: Compare any number of datasets side-by-side with a diff view, and run evaluations on all of them simultaneously 5. Observability: Monitor your LLM features in production with continuous evaluations and granular analytics. Athina can be used by non-technical users as well as technical users. This means PMs, QA, Data Scientists, and Engineers can collaborate to build great AI products.

Echoes gives engineering leaders visibility into the alignment of engineering efforts against the business goals and whether their deliveries are having actual business impacts. By doing so we enable engineering leaders to make informed decisions on hiring and priorities, to communicate effectively on their team's activity to their business partners/bosses/investors, and to build engagement by putting their team's work into context. We achieve this by offering a seamless way for engineers to connect their day-to-day contributions to their intent, creating the missing link between tech outputs and business outcomes.

Battle-tested + highly modular vision infrastructure to convert PDFs, PPTs, Word, Excel, PNG, and JPEGs into LLM-ready data. We started by building lumina.sh - where we needed to parse ~600M pages of scientific literature. The researchers didn't care - but devs wanted our ingestion pipeline. So we built chunkr instead. We offer high quality layout analysis, OCR, bounding boxes, granular VLM controls, semantic chunking, and all the last mile engineering that goes into building standout AI applications. Common use-cases include RAG, and automating document workflows like invoices/medical reports -> database.

ComfyUI is the most popular open-source framework to build media generation workflows. However, it's a single-player experience that needs to run on a local GPU. Everyone has different environments and sharing workflows to someone else can take days to get setup. Comfy Deploy fixes this by creating a collaborative workspace, where a teams environemnt, models and workflows can be shared as easily with a link. **Team ComfyUI workspace** • Replacing cobbled-together solutions with a unified, team-focused environment. When it works for you, you can be sure it works for your team. • Eliminate "works on my machine" issues with version control. • Share storage for models and outputs. • Leverage the power of ComfyUI without the complexities of self-hosting **Powerful GPU Infrastructure** • Access managed GPUs that grow with your teams needs • Tailor the platform to your requirements by easily installing custom nodes and models **Custom configuration** • Download the models you want, stored privately in your personal volume • Install the custom nodes your workflow needs • Train models on your own datasets. **API Deployments: From workflow to production in seconds** • Transform any workflow into a fully functional API immediately without extra engineering • Comprehensive observability on every run • Built-in API authentication • TS/JS/Python/Ruby SDKs for seamless integration

TraceRoot.AI is the first open source AI agent that monitors production environments and automatically fixes bugs. It connects to telemetry data like traces, logs, metrics and repo to analyze and auto-resolve bugs.

We are building a fully local opensource software engineer. Software thrives on opensource tools and it's only right that this technology be built for all to use.

IvyCheck helps you extract hidden insights from your data and ensures high data quality and consistency. Use Generative AI in your data warehouse to transform data at scale.

Stacksync powers real-time and bidirectional data synchronization between CRMs (e.g. Salesforce, Hubspot or SAP) and databases (e.g. Postgres, Google BigQuery,...). Edits made in your CRM will instantly update in your Database, and vice-versa. To set up a sync, users simply have to connect the two chosen apps in one click and select the tables they want to sync, no-code! Stacksync reduces implementation delays from months to minutes for CRM integration projects and removes all the complexity behind CRM new feature development. We show a 90% improvement on delivery time and budget.

Superb AI is a leading computer vision platform and professional services provider that provides enterprise-grade, end-to-end MLOps and DataOps workflows to accelerate the adoption and development of data-centric AI. Through the practical application of AI-based automation, Superb AI helps teams manage the entire ML lifecycle more efficiently, from data annotation to curation, model training, and deployment, while ensuring optimal data accuracy and consistency.

We are a team of ex-Mercor, Databricks, Google and Bespoke Labs Engineers building out a platform to empower the next generation of Market Research. We assist in designing interviews, sourcing thousands of participants, and conducting AI-powered research at unprecedented scale. Get actionable insights in hours, not weeks. We've built our custom analytics layer capable of working through 1000s of transcripts to extract truly meaningful insights.

Embedder is a coding agent that can write and test firmware on real hardware. General-purpose coding agents lack the hardware-specific context required to program embedded systems, resulting in plausible-looking code that is functionally useless on a real device. Embedder indexes hardware documentation and connects to physical tools, allowing it to autonomously test and validate the firmware it generates in the real world.

Silimate is the copilot for chip designers; it finds and fixes functional and PPA issues in your chip designs. Today, chip teams spend most of their 12-18 month design cycles converging slowly to functional correctness and their targeted PPA (power/performance/area). With Silimate, chip designers create correct, PPA-converged RTL code in minutes and eliminate months from their tape out schedule.

Our Mission: We aim to accelerate and automate chemical process development by equipping wet-lab chemists with the power of data-driven optimization and robotic execution of experiments. The Problem: The discovery of novel pharmaceuticals is one of our most important weapons in fighting disease. However, the drug development pipeline is often held up for many months during the design of chemical processes to manufacture these drugs at scale, delaying FDA trials and lengthening the time until drug launch. Designing chemical processes involves the identification of suitable parameters such as catalyst/temperature/solvent. Currently process development is often done via tedious trial-and-error experimentation (slow) or exhaustive screening (expensive and wasteful). Our Approach: In our research, we have developed algorithms for chemical process optimization, which leverage transfer learning and Bayesian optimization. We validated the algorithms in the wet lab, showing an up to 95% reduction in required experiments and cost compared to exhaustive screening. We have made our approaches accessible to chemists through our user-friendly no-code software platform and to automated laboratory equipment with our API.

LightTwist is your virtual studio in the cloud. Record and stream video in a customizable virtual studio that you control from your browser.

We started with HeroUI, an open-source library that provides React developers with a set of 44 components to create beautiful and accessible interfaces. Now, we’re expanding our vision with HeroUI Chat (heroui.chat), an AI-powered platform that helps developers and teams build beautiful frontends in minutes

We're building Aide, an AI-native IDE designed for engineers to enjoy problem-solving with agents by their side. We're currently a team of two, based in London, United Kingdom. Between us, we have been tech leads with experience building testing infrastructure at Meta, payment systems for 150k merchants in India, been an ACM ICPC world finalist and Open-Source contributor to critical infrastructure including gRPC and the Bazel build system. We love dev tooling, and enjoy thinking about the future of programming.

Greptile reviews pull requests with full context of the codebase. Top YC companies like PostHog, Raycast, Vouch, Podium, and YC's own internal software team use Greptile to review millions of changes every week. When companies start using Greptile, they catch more bugs and merge PRs 4x faster, on average Greptile can be used via the cloud, or be hosted 100% on your cloud in an air-gapped VPC.

Mergent is a task scheduling API that makes it super easy for developers to schedule and manage background tasks like notifications, data processing, and third-party integrations. We provide a simple well-documented API that any developer can instantly start using straight from our website.

Cosmic is a headless CMS and API toolkit to help teams build modern apps faster, together. We provide a web dashboard to create content and API tools to deliver content into any website or app. Teams benefit from using Cosmic because it eliminates the need to build and maintain their own CMS infrastructure. Teams pay a monthly subscription fee for our hosted CMS and can focus on their application logic, creating great content, and enhancing user experiences.

Prompting: Systematically iterate on prompts - Unified prompt management dashboard - Side-by-side model comparisons - Native support for tools, structured outputs, OpenAPI specs Workflows: The IDE for building steerable, agent-like systems. - Visual graph builder for orchestrating complex AI systems - Support for any model, custom code, and map/reduce functions - Built-in features like loops, parallelism, error handling Workflows SDK: A full-stack SDK + GUI for building AI apps with precision and flexibility. - Bi-directional sync between code and UI - Fine-grained control flow and global state management - Customizable with Docker and streaming support Evaluations: Test-driven development for AI. - Build scalable test suites via UI/API/CSV - Use pre-built or custom metrics for evaluation - Track quality, cost, latency, and regressions over time Retrieval: Powerful RAG infrastructure without the complexity. - Simple APIs for uploading and querying unstructured data - Tweak chunking, embeddings, and search for advanced use-cases - Supports various file types including tables and images Deployments: Update AI systems without redeploying your app. - One-click deploy across any model or provider - Staging environments for safe iteration - Scalable inference endpoints for production use Observability: Full visibility into AI system performance. - Audit logs, debugging tools, and feedback capture - Evaluation loops on live traffic - Dashboards to track cost, latency, errors, and trends

Ellipsis will help your team merge code 13% faster. Ellipsis is an AI developer tool that automatically reviews code and fixes bugs on pull requests. It uses LLM agents to catch logical errors, security issues, and can even enforce a team's style guide. The coolest part is that after Ellipsis identifies an issue, developers can tag @ellipsis-dev to have Ellipsis implement the fix. Internally, Ellipsis actually executes the code it generates, just like a human does. As a result, we allow developers to generate working, tested code directly from GitHub/GitLab.

a0.dev is a platform that helps mobile developers build high quality apps in days instead of weeks by generating custom react native projects. We've launched top ranking apps that have been used by hundreds of thousands, and now we're creating the tools we wish we had to build faster.

Penetration testing and bug bounty platform.

Panels is an audio data platform that delivers high-quality speech datasets from vetted, diverse contributors to power training and evaluation of foundational voice models.

Tiptap is a suite of open source content editing and real-time collaboration tools for developers building apps like Notion or Google Docs. It’s used by thousands of businesses worldwide, including LinkedIn, GitLab, Axios, and Anthropic.

Intuned is an AI enabled cloud platform to author, deploy, and monitor integrations to extract web data and execute browser automation. We enable engineers to build reliable integrations to access data and complete actions on other web services when official APIs are not available or complete.

CodeLayer is an OSS IDE for managing coding agents, built with proven workflows to solve hard problems in complex codebases.

Weave uses AI to understand engineering.

Mach9 is at the forefront of leveraging advanced machine learning and computer vision techniques to transform geospatial data into actionable insights for urban development and infrastructure management. Our cutting-edge technology automates the detection and analysis of key urban features, aiding in the planning and maintenance of transportation networks.

Built by electrical engineers for electrical engineers, SnapMagic removes monotony so that engineers can do their best work. SnapMagic’s electronic component data is used by over 1.5 million engineers across the world’s largest organizations. Its new AI Copilot will change the way that every engineer designs electronics. Join at www.snapmagic.com.

The Sails Company was founded by the original author and maintainers of the Sails framework. In addition to free and open-source software, The Sails Company offers a full-service web & mobile studio and professional support for the tools we maintain.

At Axross, we specialize in delivering AI-driven HVAC control systems designed to enhance energy efficiency and reduce operational costs for manufacturers. Our solutions are tailored to meet the stringent requirements of industries, where maintaining precise environmental conditions is critical. With a team of experts in AI, data science, and industrial systems, Axross is committed to providing reliable, scalable solutions that help manufacturers achieve their energy efficiency goals and support sustainable practices.