You asked about Sleep Tech

12 people built something like it. 5 are gone.

That is 42% of the ones whose fate we could settle, against 23% across the whole register.

Matching
17
Gone
42%
Median life
Acquired
0

Matching launches

checked 10 hours ago · 250 probed today
LaunchedWhat it wasToday
2021-07-06
sidequestjobs.com
unverified
2021-07-20
sioyek.info
still up
2021-11-15
textframe.app
still up
2021-03-05
relocate.me
still up
2021-02-03
ytt-tech.com
unverified
2021-04-03
bilbof.com
still up
2021-01-07
leetresumes.com
unverified
2021-10-11
hellocaribou.com
gone
2021-09-14
hackerpen.io
gone
2021-03-28
recorank.com
unverified
2021-06-15
tilodb.com
gone
2021-03-13
reallyconfused.co
still up
2021-09-26
jobsinhealthtech.com
gone
2021-03-26
serendipital.com
still up
2021-11-19
getzero.dev
moved
2021-03-28
remotebear.io
still up
2021-01-01
englog.io
gone~27mo

How this compares

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.