You asked about Calendar
20 people built something like it. 6 are gone.
That is 30% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2022-11-17 | tweek.so | still up |
| 2022-03-18 | calenday.co | unverified |
| 2021-01-09 | convier.me | gone~19mo |
| 2022-01-18 | life-cal.com | still up |
| 2023-01-11 | lowtechguys.com | still up |
| 2022-03-30 | calendar.sharats.me | gone |
| 2023-12-09 | useminimal.com | still up |
| 2021-02-28 | querycal.com | unverified |
| 2023-03-06 | stavros.io | still up |
| 2021-01-03 | organizedly.io | gone~4mo |
| 2022-03-13 | frcal.qt.ax | still up |
| 2022-08-21 | atomiclife.app | moved |
| 2023-01-23 | todogrids.com | gone |
| 2021-03-01 | getclockwise.com | still up |
| 2021-04-06 | birthday.report | gone |
| 2022-12-13 | onin.co | moved |
| 2022-01-10 | recalendar.me | still up |
| 2021-10-20 | lifeofdiscipline.com | still up |
| 2023-07-10 | uptimelog.app | still up |
| 2023-08-30 | pyas.io | still up |
| 2023-11-09 | flowlance.com | still up |
| 2021-02-25 | tweek.so | still up |
| 2022-12-05 | scottantipa.com | gone |
| 2023-12-13 | findtime.fberge.com | unverified |
| 2022-12-06 | aerotime.com | still up |
| 2022-02-07 | savvyapp.cc | unverified |
| 2023-04-27 | onin.co | moved |
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.