You asked about Data Engineering
Nobody in the register described anything this way.
| Launched | What it was | Today |
|---|---|---|
| 2022-01-01 | YCHomeRoom We Rent Your Property by the Room. You earn 50% more Rent. · livehomeroom.com | acquired |
| 2022-01-01 | YCSarus Use personal data for analytics and ML, safely and seamlessly · sarus.tech | acquired |
| 2022-01-01 | Automating all IT operations · stackshine.com | acquired |
| 2022-01-01 | YCHydra Serverless Analytics on Postgres · hydra.so | acquired |
| 2022-01-01 | YCBracket Two-way syncs between business tools and your database · usebracket.com | acquired |
| 2022-01-01 | Open-Source Postman alternative · requestly.com | acquired |
| 2022-06-01 | Turn user feedback to product insights · monterey.ai | acquired |
| 2022-01-01 | Run compute-intensive apps in a browser · jamsocket.com | acquired |
| 2022-06-01 | YCHyperDX Open-source, dev-friendly observability. · hyperdx.io | acquired |
| 2022-06-01 | YCPayload Developer-First Headless CMS and Application Framework · payloadcms.com | acquired |
| 2022-06-01 | YCNeosync Neosync is an open-source anonymization and synthetic data platform. · neosync.dev | acquired |
| 2022-01-01 | YCJumpWire Dynamic access controls for all data and databases · jumpwire.io | acquired |
| 2022-01-01 | Multi-chain token data platform · simplehash.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.