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Nobody in the register described anything this way.
| Launched | What it was | Today |
|---|---|---|
| 2022-01-01 | YCSkyLink Travel Management Meets AI · tryskylink.com | acquired |
| 2015-01-01 | Paperspace is a cloud platform for building and scaling AI… · paperspace.com | acquired |
| 2016-06-01 | YCCrowdAI CrowdAI is the world's leading no-code platform for vision AI · crowdai.com | acquired |
| 2022-06-01 | YCTigerEye AI for Construction · tigereye.com | acquired |
| 2013-01-01 | Data and AI platform for Ecommerce & Cross-Border Logistics · semantics3.com | acquired |
| 2022-06-01 | YCTruva Sell more. Grind less with AI agents. · truva.ai | acquired |
| 2024-01-01 | YCOnyx Open Source AI Chat · onyx.app | acquired |
| 2019-01-01 | Talent AI improving quality of hire · searchlight.ai | acquired |
| 2020-01-01 | YCPowerX AI powered sensors that save energy, water and emissions · powerx.co | acquired |
| 2020-06-01 | Combining 3D cell culture & AI to translate drugs to clinical success · knownmed.com | acquired |
| 2017-01-01 | YCScribe Scribe is an AI based Sales Development Representative that you can… · tryscribe.com | acquired |
| 2024-06-01 | YCSepal AI Data Development for Advanced AI · sepalai.com | acquired |
| 2016-01-01 | YCCaper Plug-and-play cashier-less retail powered by computer vision and AI · caper.ai | acquired |
| 2020-06-01 | Humanloop is the LLM evals platform for enterprises. · humanloop.com | acquired |
| 2018-01-01 | YCEdwin Edwin is virtual English tutor - an AI-powered service for learning… · edwin.ai | acquired |
| 2021-01-01 | Dramatically better search and ads for marketplaces · promoted.ai | acquired |
| 2018-06-01 | YCPhiar We are developing a revolutionary AI-powered augmented reality… · phiar.net | acquired |
| 2016-01-01 | YCNova Nova puts the power of AI to work for you, enabling a more continuous… · nova.ai | acquired |
| 2021-01-01 | YCTaoFi The financial layer for decentralized AI · taofi.com | acquired |
| 2022-01-01 | YCHOAi AI agent for community management · hoai.com | acquired |
| 2021-01-01 | YCunSurvey AI-led market research interviews, no scheduling, instant insights. · unsurvey.ai | acquired |
| 2023-06-01 | Metadata for GenAI workflows · deasylabs.com | acquired |
| 2020-06-01 | YCBrevy Empower your customer service team through AI & automation. · brevy.com | acquired |
| 2021-01-01 | Build better computer vision models by building better datasets · segments.ai | acquired |
| 2017-06-01 | AI support agent for your business that actually works · percept.ai | acquired |
| 2022-01-01 | Artificially Intelligent Corporations · mutable.ai | acquired |
| 2022-06-01 | Turn user feedback to product insights · monterey.ai | acquired |
| 2022-01-01 | YCHypaHub A Cloud-Based Bioinformatics and AI Platform · hypahub.com | acquired |
| 2023-06-01 | Open source GenAI development platform · flowiseai.com | acquired |
| 2019-01-01 | YCWindsor AI Powered Personalized Videos · windsor.io | acquired |
| 2018-01-01 | Wearables and AI to predict and prevent sepsis outside the hospital · sepsisscout.com | acquired |
| 2023-06-01 | The AI-powered risk decision platform · trycatamaran.com | acquired |
| 2023-01-01 | YCNo Cap AI startup investor, No Cap · nocap.so | acquired |
| 2024-01-01 | YCTusk AI agent that generates unit and integration tests · usetusk.ai | acquired |
| 2024-06-01 | Voice AI to automate complex phone calls for healthcare providers · heyrevia.ai | acquired |
| 2024-06-01 | YCRemade AI-native canvas for creative workflows. · remade.ai | acquired |
| 2021-01-01 | YCFriz AI Social Media Manager · usefriz.com | acquired |
| 2023-06-01 | YCPincites Close deals faster with AI for contract negotiation · pincites.com | acquired |
| 2021-06-01 | YCVogent Build Voice AI Agents · vogent.ai | acquired |
| 2023-01-01 | AI Co-Pilot for Health Insurers to Authorize Treatment Faster · fairwayhealth.co | acquired |
| 2023-01-01 | YCBooth AI Generative AI Photographer for E-Commerce · booth.ai | acquired |
| 2024-01-01 | YCSpeck AI Notetaker that automates all your admin work · speck.sh | acquired |
| 2023-01-01 | YCCardinal Your AI product backlog · cardinalapp.io | acquired |
| 2021-06-01 | YCMentum AI-Powered Assistant for Procurement and Strategic Sourcing · getmentum.com | acquired |
| 2025-09-01 | YCRemedy AI Agents for Pharmacies · useremedy.co | acquired |
| 2023-01-01 | YCDashdive Break down AI and cloud costs by feature and customer · dashdive.com | acquired |
| 2017-01-01 | YCTetra AI notetaker for phone calls · asktetra.com | acquired |
| 2023-01-01 | Open source tools & services for reliable AI Agents & AI Applications · dagworks.io | acquired |
| 2023-06-01 | YCInari Your junior AI product manager · useinari.com | acquired |
| 2023-06-01 | YCAutotab AI agents reliable enough to do real work · autotab.com | acquired |
| 2020-01-01 | App offering AI powered workout plans with anytime access to coaches · fitnessai.com | acquired |
| 2016-06-01 | Enabling autonomous drone operations globally through AI software · irisonboard.com | acquired |
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.