You asked about ML
Nobody in the register described anything this way.
| Launched | What it was | Today |
|---|---|---|
| 2016-06-01 | YCCareRev Seamlessly connecting healthcare facilities and professionals through… · carerev.com | acquired |
| 2020-06-01 | YCWarmly, [Acquired by HubSpot in 2026] Autonomous sales platform to auto-email… · warmly.ai | acquired |
| 2021-01-01 | YCFinley Streamline your debt capital raise and management · finleycms.com | acquired |
| 2015-01-01 | YCSigOpt SigOpt is an Optimization-as-a-Service platform that seamlessly tunes… · sigopt.com | acquired |
| 2022-01-01 | YCSarus Use personal data for analytics and ML, safely and seamlessly · sarus.tech | acquired |
| 2020-06-01 | We help ML teams improve their models by improving their datasets · aquariumlearning.com | acquired |
| 2012-01-01 | YCFarmLogs Software that helps farmers operate more profitable businesses. · farmlogs.com | acquired |
| 2020-06-01 | Bandit ML builds machine learning tools for e-commerce companies. · banditml.com | acquired |
| 2008-06-01 | Acquired by Google in 2011 · justspotted.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.