You asked about AR
293 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 |
|---|---|---|
| 2025-09-01 | YCIcarus Stratospheric birds for defense · icarus.one | still up |
| 2025-01-01 | YCSpott AI-native ATS/CRM for recruiting firms · spott.io | still up |
| 2025-01-01 | Applied research lab curating data solutions for foundation model… · afterquery.com | still up |
| 2025-01-01 | YCMastra The Javascript framework for building AI agents, from the Gatsby devs · mastra.ai | still up |
| 2025-01-01 | YCMundo AI High Quality Multilingual Training Data for AI Models · mundoai.world | still up |
| 2025-01-01 | YCHarper AI-native commercial insurance brokerage · harperinsure.com | still up |
| 2025-09-01 | YCUplane Replace marketing agencies with AI · uplane.com | still up |
| 2025-06-01 | YCKERNEL Crazy fast, open source infra for AI agents to use the Internet · kernel.sh | still up |
| 2025-01-01 | Software Enabled CNC Parts Supplier · forgeautomation.ca | still up |
| 2025-09-01 | YCBolna AI Voice AI to enable India's next billion · bolna.ai | still up |
| 2025-01-01 | AI hiring platform powered by expert recruiters · contrario.ai | still up |
| 2025-06-01 | Drone submarines · albacore.inc | still up |
| 2025-01-01 | AI for insurance verification & billing at dental clinics · toothy.ai | still up |
| 2025-01-01 | YCPickle Where your life context becomes understanding. · pickle.com | still up |
| 2025-06-01 | YCF2 The AI platform for private markets investors · f2.ai | still up |
| 2025-01-01 | YCHUD Platform for building RL environments and evals · hud.ai | still up |
| 2025-09-01 | YCSemble The all-in-one software for integrators. · sembleai.com | still up |
| 2025-01-01 | AI voice and texting agents · leapingai.com | still up |
| 2025-01-01 | YCAthenaHQ Be the Answer in AI Search - AI SEO across SEO, GEO & AEO · athenahq.ai | still up |
| 2025-01-01 | Reusable Satellites · reditus.space | still up |
| 2025-01-01 | We build networks of AIs to simulate high-value audiences · societies.io | still up |
| 2025-01-01 | YCMentra Building the open source smart glasses operating system. · mentra.glass | still up |
| 2025-06-01 | YCidler Hill-climb any benchmark, for any model, in any domain. · idler.ai | still up |
| 2025-06-01 | YCLanesurf Book any load in 10 minutes · lanesurf.com | still up |
| 2025-01-01 | YCCardamon AI compliance co-pilot for regulated financial businesses · cardamon.ai | still up |
| 2025-06-01 | Optimizing fleet planning with data driven algorithms · fleetline.ai | still up |
| 2025-09-01 | Agentic AI for Society Builders · brickanta.com | still up |
| 2025-09-01 | The AI drawing review platform for architects and engineers. · getstructured.ai | still up |
| 2025-06-01 | YCRuvo The Global Dollar App for Brazil · ruvo.com | still up |
| 2025-09-01 | YCZalos Hire Zalos AI workers to run your finance department · zalos.ai | still up |
| 2025-01-01 | YCYouShift The OS for hospital workforce management · you-shift.com | still up |
| 2025-06-01 | YCReacher We automate creator marketing for the world's largest brands · reacherapp.com | still up |
| 2025-06-01 | Compute substrate for AI agents · dedaluslabs.ai | still up |
| 2025-01-01 | AI-powered Patient Identification for Clinical Trials · gethealthkey.com | still up |
| 2025-06-01 | YCMagnetic AI Tax Preparer for CPA firms · magnetictax.com | still up |
| 2025-01-01 | Making humanoids dexterous enough to thread a needle · proception.ai | still up |
| 2025-09-01 | YCMOVEdot AI Agents for Hardware Engineering · movedot.ai | still up |
| 2025-06-01 | YCFinto AI accounting for enterprise finance teams · gofinto.com | still up |
| 2025-06-01 | YCcocreate video production software · cocreate.so | still up |
| 2025-01-01 | AI drug discovery platform for neurotherapeutics · exintherapeutics.com | still up |
| 2025-01-01 | YCBild AI AI estimating & detailing for Division 8 doors, frames & hardware · bild.ai | still up |
| 2025-01-01 | Manufacturing the most powerful chips, 15x faster · inversionsemi.com | still up |
| 2025-01-01 | YCAsteroid The integration layer for healthcare: EHRs, payer portals & more · asteroid.ai | still up |
| 2025-06-01 | Replacing the restaurant phone line with Voice AI · certus-ai.com | still up |
| 2025-09-01 | The Modular Interceptor Platform · wardstone.us | still up |
| 2025-09-01 | Your Company Brain · hyperspell.com | still up |
| 2025-01-01 | AI performance monitoring for factory workers · optifye.ai | still up |
| 2025-06-01 | Tiny Edge AI For Tiny Devices · cactuscompute.com | still up |
| 2025-09-01 | Superintelligent financial advisor · becomeautonomous.com | still up |
| 2025-01-01 | YCScout AI-powered student information system for K-12 schools · scoutforschools.com | still up |
| 2025-09-01 | YCZavo AI Operating System for Restaurants · zavopay.com | still up |
| 2025-09-01 | AI agents for your healthcare back-office operations. · goclicks.ai | still up |
| 2025-01-01 | YCWoz Claude Code plugin that reduces token consumption and cost by 50% · wozcode.com | still up |
| 2025-06-01 | YCGolpo Create Whiteboard Explainer Videos with AI from a Prompt or Document · video.golpoai.com | still up |
| 2025-06-01 | We help products get discovered & used by AI agents. · promptingcompany.com | still up |
| 2025-09-01 | YCTornyol We build micro-drones that kill mosquitoes. · tornyol.com | still up |
| 2025-06-01 | YCLuminal Making AI run fast on any hardware. · luminal.com | still up |
| 2025-09-01 | Physical businesses that run themselves · parametric.company | still up |
| 2025-06-01 | Analyze any footage, without training a model · ondeckai.com | still up |
| 2025-09-01 | YCAbsurd The Creative OS for AI video · absurd.com | still up |
How this compares
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.