You asked about Engineering, Product and Design
989 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2017-06-01 | The first public safety operating system that eliminates crime. · flocksafety.com | still up |
| 2014-01-01 | YCAlgolia A developer-friendly and enterprise-grade search API. · algolia.com | still up |
| 2016-06-01 | YCBird The world’s largest omnichannel communications platform · bird.com | still up |
| 2016-06-01 | YCScale AI Data-centric infrastructure to accelerate the development of AI · scale.com | still up |
| 2016-01-01 | YCSendbird The AI agent that doesn’t just support, it delights. · sendbird.com | still up |
| 2016-01-01 | Agentic Observability Platform for Mobile · luciq.ai | still up |
| 2012-01-01 | YCRescale High Performance Computing Built for the Cloud · rescale.com | still up |
| 2014-01-01 | YCPovio Engineering and Design that Fuels Startup Success · povio.com | still up |
| 2018-06-01 | Build and grow your app business · revenuecat.com | still up |
| 2021-01-01 | YCGigs The OS for Embedded Telecom · gigs.com | still up |
| 2019-06-01 | YCCoLab Human and AI design review for hardware · colabsoftware.com | still up |
| 2015-06-01 | YCZeplin Deliver on the Promise of Design · zeplin.io | still up |
| 2016-01-01 | YCDeepgram Building foundational AI for speech transcription and understanding. · deepgram.com | still up |
| 2020-06-01 | YCRoboflow 🖼️ Give your software the sense of sight. · roboflow.com | still up |
| 2021-01-01 | YCAlokai Frontend Platform for eCommerce · alokai.com | still up |
| 2018-01-01 | YCShogun Shogun empowers brands to create exceptional ecommerce experience. · getshogun.com | still up |
| 2022-01-01 | AI-native operating system for home service businesses · broccoli.com | still up |
| 2019-01-01 | Superb AI provides end-to-end computer vision MLOps platform · superb-ai.com | still up |
| 2022-01-01 | YCMintlify The intelligent knowledge platform · mintlify.com | still up |
| 2020-06-01 | YCFinch Finch is the Employment Data Platform · tryfinch.com | still up |
| 2018-01-01 | YCReplit Collaborative in-browser IDE · replit.com | still up |
| 2021-06-01 | YCVerihubs AI-powered Deepfake Detection · verihubs.com | still up |
| 2020-06-01 | YCDecentro API Platform for Banking Integrations (Plaid for India and APAC) · decentro.tech | still up |
| 2021-01-01 | YCMindee AI Document Understanding API · mindee.com | still up |
| 2019-06-01 | The design system layer for coding agents · zeroheight.com | still up |
| 2021-01-01 | Application Development Platform (Native Mobile + Web Apps) · flutterflow.io | still up |
| 2016-01-01 | YCChatfuel Platform to easily create chatbots to engage with audiences on… · chatfuel.com | still up |
| 2015-01-01 | YCReadMe Beautiful, personalized, interactive developer hubs · readme.com | still up |
| 2020-06-01 | YCLuminai Luminai is the AI platform for Health System Operations. · luminai.com | still up |
| 2024-06-01 | AI Agents for collections · domu.ai | still up |
| 2021-01-01 | YCVapi Voice AI for developers. · vapi.ai | still up |
| 2020-01-01 | YCParagon The embedded integration platform for SaaS apps. · useparagon.com | still up |
| 2019-01-01 | YCGlide Glide turns spreadsheets into beautiful, intelligent apps. · glideapps.com | still up |
| 2023-01-01 | YCResend Email for developers · resend.com | still up |
| 2021-01-01 | Stripe for online identity verification · authologic.com | still up |
| 2023-01-01 | YCPirros AI Platform for Architects and Engineers · pirros.com | still up |
| 2018-01-01 | YCVeriff AI-powered identity verification solution for fraud prevention. · veriff.com | still up |
| 2021-01-01 | User research on autopilot. · greatquestion.co | still up |
| 2019-01-01 | YCMobot Mobot is a QA-as-a-service platform using actual mechanical robots · mobot.io | still up |
| 2012-06-01 | no-code end-to-end testing that integrates with any CI/CD pipeline · rainforestqa.com | still up |
| 2022-01-01 | YCBotCity Observability and Governance for AI-Generated Python scripts. · botcity.dev | still up |
| 2017-06-01 | sourceress.com | still up |
| 2019-06-01 | YCCourier The fastest way for developers to build notifications for their app. · courier.com | still up |
| 2022-01-01 | YCRally Agentic User Research Infrastructure · rallyuxr.com | still up |
| 2024-01-01 | YCGreptile AI code review agent with complete context of your codebase · greptile.com | still up |
| 2019-01-01 | YCJuziBot Intercom for WeChat, help companies to acquire, engage, retain… · juzibot.com | still up |
| 2024-01-01 | Real-time and two-way sync between CRMs and Databases · stacksync.com | still up |
| 2021-06-01 | YCPluggy Plaid for Brazil: we allow developers to access users' financial data · pluggy.ai | still up |
| 2021-01-01 | YCauthzed Authorization Infrastructure securing AI at OpenAI, Zoom, & more · authzed.com | still up |
| 2024-01-01 | YCReducto The complete agentic document platform · reducto.ai | still up |
| 2023-06-01 | YCGiga AI Support Agent for Enterprises. · giga.ai | still up |
| 2021-06-01 | Making it easy to sell personalized products online. · customily.com | still up |
| 2025-01-01 | YCMastra The Javascript framework for building AI agents, from the Gatsby devs · mastra.ai | still up |
| 2020-01-01 | YCRelease Environments as a service · release.com | still up |
| 2024-01-01 | Autonomous offensive and defensive cybersecurity platform · codeant.ai | still up |
| 2021-06-01 | Executable specifications in English for test automation · testrigor.com | still up |
| 2022-01-01 | YCTheneo Stripe-like API Docs in just a few clicks · theneo.io | still up |
| 2021-06-01 | YCMach9 AI CAD Software for Civil Engineering · mach9.ai | still up |
| 2021-01-01 | API for developers and AIs to access health data · tryterra.co | still up |
| 2023-01-01 | YCClueso Create beautiful videos & docs for any product or process in minutes · clueso.io | still up |
How this compares
Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.