You asked about Engineering, Product and Design
175 people built something like it. 38 are gone.
That is 24% of the ones whose fate we could settle, against 23% across the whole register. 14 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-01-01 | YCGigs The OS for Embedded Telecom · gigs.com | still up |
| 2021-01-01 | YCAlokai Frontend Platform for eCommerce · alokai.com | still up |
| 2021-06-01 | YCVerihubs AI-powered Deepfake Detection · verihubs.com | still up |
| 2021-01-01 | YCMindee AI Document Understanding API · mindee.com | still up |
| 2021-01-01 | Application Development Platform (Native Mobile + Web Apps) · flutterflow.io | still up |
| 2021-01-01 | YCVapi Voice AI for developers. · vapi.ai | still up |
| 2021-01-01 | Stripe for online identity verification · authologic.com | still up |
| 2021-01-01 | User research on autopilot. · greatquestion.co | 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 |
| 2021-06-01 | Making it easy to sell personalized products online. · customily.com | still up |
| 2021-06-01 | Subscription infrastructure & paywall experimentation for mobile apps · superwall.com | still up |
| 2021-01-01 | Shift FinOps Left: Proactively Find & Fix Cloud Cost Issues · infracost.io | still up |
| 2021-06-01 | Executable specifications in English for test automation · testrigor.com | 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 |
| 2021-06-01 | The fastest way to ship airtight AI · openlayer.com | still up |
| 2021-01-01 | YCUiflow No-code platform for enterprise software companies · ycombinator.com | acquired |
| 2021-06-01 | YCReplo Sell anything · replo.app | still up |
| 2021-01-01 | YCRunway Easier and more reliable mobile app releases for teams. · runway.team | still up |
| 2021-06-01 | YCAbstra Automate finance operations with Python and AI · abstra.io | still up |
| 2021-06-01 | YCNoloco Flexible Business Apps for Modern Teams · noloco.io | still up |
| 2021-06-01 | Affogato AI — Your Agent for instant TikToks, Reels, and ads. · affogato.ai | still up |
| 2021-06-01 | AI native mobile testing. · mobileboost.io | still up |
| 2021-06-01 | Automated e2e screenshot testing without writing or maintaining tests · meticulous.ai | still up |
| 2021-06-01 | YChotglue Native user-facing SaaS integrations for your customers · hotglue.com | still up |
| 2021-06-01 | YCArchbee TURN STATIC DOCS INTO INSTANT ANSWERS · archbee.com | still up |
| 2021-06-01 | Plan and review AI generated code · vibekanban.com | still up |
| 2021-01-01 | Supercharge your mobile apps · emergetools.com | acquired |
| 2021-06-01 | Accelerate software development with WarpBuild's 10x faster CI infra. · warpbuild.com | still up |
| 2021-01-01 | Build better computer vision models by building better datasets · segments.ai | acquired |
| 2021-01-01 | YCunSurvey AI-led market research interviews, no scheduling, instant insights. · unsurvey.ai | acquired |
| 2021-06-01 | YCEndla Software that increases the value of oil & gas wells · endla.com | still up |
| 2021-06-01 | Never code alone. · squire.ai | gone |
| 2021-01-01 | YCHaystack Delivery Analytics for Software Teams · usehaystack.io | still up |
| 2021-06-01 | YCAviator Google-level engineering productivity suite · aviator.co | still up |
| 2021-01-01 | YCWebiny Open-source framework for building serverless applications · webiny.com | still up |
| 2021-01-01 | Open source continuous profiling software to debug performance issues · pyroscope.io | acquired |
| 2021-01-01 | Synthetic data for better vision. · sbxrobotics.com | gone |
| 2021-01-01 | A faster and more collaborative alternative to Jira for remote teams · kitemaker.co | acquired |
| 2021-06-01 | YCLightly Help ML teams label the right data · lightly.ai | still up |
| 2021-01-01 | YCClay Figma for 3D design · clay3d.io | gone |
| 2021-01-01 | YCTaloflow Better, faster tech vendor research · taloflow.ai | still up |
| 2021-01-01 | The notification inbox for web/mobile applications. · magicbell.com | still up |
| 2021-01-01 | YCPensil New-Age White Label Community Platform SDKs and APIs for Games,… · pensil.in | gone |
| 2021-01-01 | YChoop.dev Code review for DevOps tasks · hoop.dev | still up |
| 2021-06-01 | YCBytebot Bytebot is the open source container for AI desktop agents. · bytebot.ai | acquired |
| 2021-06-01 | YCBuzzle Automatic voice-of-customer trends & metrics from sales conversations. · buzzle.ai | gone |
| 2021-01-01 | YCTriplit The best database for app developers · triplit.dev | gone |
| 2021-06-01 | Measure and communicate engineering activity · echoeshq.com | still up |
| 2021-01-01 | YCCodeball AI-Powered Code Review · codeball.ai | gone |
| 2021-06-01 | Observability for Data Engineering Teams · lariatdata.com | gone |
| 2021-01-01 | YCAxolo Improving Developer Experience with Streamlined Code Reviews · axolo.co | still up |
| 2021-01-01 | YCLunatic Operating System for server-side apps · lunatic.solutions | gone |
| 2021-01-01 | Realistic virtual video studio to record and stream from your browser · lighttwist.com | still up |
| 2021-06-01 | YCDime Instant E2E tests for your website · dime.io | gone |
| 2021-06-01 | Delightful components for iOS. · movingparts.io | gone |
| 2021-01-01 | YCWasp Configuration language for building enterprise web apps 10x faster · wasp-lang.dev | still up |
| 2021-01-01 | YCFable The command center for product teams · tryfable.com | gone |
| 2021-06-01 | YCMergent Incredibly reliable background task queues and cron jobs · mergent.co | 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.
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.