You asked about Chat
Nobody in the register described anything this way.
| Launched | What it was | Today |
|---|---|---|
| 2020-06-01 | AI-powered user assistance platform · command.ai | acquired |
| 2017-06-01 | YCGuilded Chat for gaming communities · guilded.gg | acquired |
| 2024-01-01 | YCOnyx Open Source AI Chat · onyx.app | acquired |
| 2021-06-01 | YCBeeper One chat app to rule them all · beeper.com | acquired |
| 2017-01-01 | Clear Genetics is scaling delivery of Genomic services · cleargenetics.com | acquired |
| 2020-01-01 | YCGlimpse A social video chat. · joinglimpse.com | acquired |
| 2011-06-01 | YCVerbling Language learning through video chat. · verbling.com | acquired |
| 2023-06-01 | YCChatter Dead simple LLM testing and iteration · chatter.anish.xyz | acquired |
| 2020-06-01 | Interactive video chat made for kids and families · togethervideoapp.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.