You asked about API
43 people built something like it. 9 are gone.
That is 21% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2021-09-12 | open-meteo.com | still up |
| 2021-09-22 | motion.dev | still up |
| 2021-02-06 | epub.to | still up |
| 2021-02-06 | libretranslate.com | still up |
| 2021-05-12 | csvbox.io | still up |
| 2021-06-06 | prestigemad.com | still up |
| 2021-01-15 | forgojs.org | still up |
| 2021-06-09 | airy.co | still up |
| 2021-11-15 | grapic.co | moved |
| 2021-07-10 | styvio.com | gone |
| 2021-03-27 | stackby.com | still up |
| 2021-08-24 | slashapi.com | still up |
| 2021-06-01 | auxl.io | still up |
| 2021-01-02 | compiledcssinjs.com | still up |
| 2021-01-25 | pdoc.dev | still up |
| 2021-11-29 | rapidrecipe.reichel.dev | still up |
| 2021-05-19 | webm.to | still up |
| 2021-10-21 | start.scaffold.ly | gone |
| 2021-09-20 | oikolab.com | still up |
| 2021-04-02 | zenlogin.co | still up |
| 2021-05-23 | glitterly.app | unverified |
| 2021-11-15 | os.cohere.ai | gone |
| 2021-10-21 | batsign.me | still up |
| 2021-02-17 | dashkite.com | still up |
| 2021-12-16 | cloudgraph.dev | still up |
| 2021-10-20 | swell.is | still up |
| 2021-03-29 | canopyservicing.com | still up |
| 2021-03-05 | arengu.com | unverified |
| 2021-11-17 | shellhook.com | unverified |
| 2021-02-19 | kreya.app | still up |
| 2021-04-27 | wundergraph.com | still up |
| 2021-10-18 | hybiscus.dev | still up |
| 2021-10-27 | rodb.io | gone |
| 2021-02-14 | mathequationapi.com | gone~13mo |
| 2021-03-06 | hosty.page | gone |
| 2021-05-14 | series.slice.so | gone |
| 2021-06-29 | massless.io | unverified |
| 2021-07-15 | stytch.com | still up |
| 2021-08-02 | doc.clickup.com | still up |
| 2021-01-31 | japan-api.github.io | unverified |
| 2021-02-27 | graphql-api.com | unverified |
| 2021-09-06 | page2api.com | unverified |
| 2021-06-09 | trytoolchest.com | gone |
| 2021-04-09 | exchangerate.host | still up |
| 2021-03-09 | m3o.com | still up |
| 2021-03-25 | hoppscotch.io | still up |
| 2021-11-24 | convertcsv.io | unverified |
| 2021-04-14 | jpeg.to | still up |
| 2021-03-02 | docs.payitoff.io | moved |
| 2021-09-08 | mockachino.com | gone |
| 2021-09-14 | mixpeek.com | still up |
| 2021-01-25 | newscatcherapi.com | still up |
| 2021-01-18 | capitol.wtf | 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.