You asked about Time Series
21 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. 1 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2022-01-01 | YCvoize We build the AI companion for nurses, to create time for care. · voize.de | still up |
| 2023-06-01 | YCVetRec AI Scribe for veterinarians. Saving time and improving patient care. · vetrec.io | still up |
| 2024-01-01 | YCPointOne AI Time Platform for Law Firms · pointone.com | still up |
| 2014-01-01 | YCMixerBox AI Super-Apps to Live Easier | The anything anytime superapps… · mixerbox.com | still up |
| 2026-06-01 | AI engineer that debugs and fixes production incidents in realtime · hyperprobe.co | still up |
| 2021-01-01 | Cut your writing time by 40% with AI-powered autocomplete · compose.ai | still up |
| 2026-01-01 | AI Infra for real-time vision applications · overshoot.ai | still up |
| 2024-01-01 | YCMarblism AI Employees who love overtime · marblism.com | still up |
| 2025-09-01 | YCMoss Real-time semantic search for Conversational AI · moss.dev | still up |
| 2026-01-01 | YCCaretta Realtime AI for Sales Calls · caretta.so | still up |
| 2023-01-01 | YCDecohere Real-time generative AI · decohere.ai | still up |
| 2026-06-01 | AI that turns any camera to an autonomous worker with real-time vision · openvector.com | still up |
| 2026-09-01 | YCMaritime The managed cloud for AI agents. · maritime.sh | still up |
| 2026-01-01 | Real-time Physics Simulations for Industrial Facilities & Data Centers · inviscidai.com | still up |
| 2025-09-01 | YCThe Hog Real-time web intelligence API for AI agents and GTM teams · thehog.ai | still up |
| 2025-01-01 | Real-time AI translator for global sales and marketing · cuckoo.so | still up |
| 2025-01-01 | Character.AI with real time video avatars · dollyglot.com | still up |
| 2023-06-01 | YCInlet AI timekeeping for legal professionals. · inletai.com | still up |
| 2020-01-01 | App offering AI powered workout plans with anytime access to coaches · fitnessai.com | acquired |
| 2024-09-01 | YCISSEN AI realtime voice companion for language learning · issen.com | still up |
| 2026-06-01 | We give AI agents realtime web context via API · context.dev | 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.