You asked about Monitoring

17 people built something like it. 5 are gone.

That is 29% of the ones whose fate we could settle, against 23% across the whole register.

Matching
25
Gone
29%
Median life
Acquired
0

Matching launches

checked 8 hours ago · 250 probed today
LaunchedWhat it wasToday
2023-10-02
openstatus.dev
still up
2022-03-15
zipy.ai
still up
2022-07-31
devraven.io
gone
2022-06-23
nerdcrawler.com
unverified
2023-06-26
kadeck.com
still up
2021-06-14
monika.hyperjump.tech
still up
2022-02-24
kordon.io
still up
2023-06-13
brotandgames.com
still up
2023-05-10
wolfia.com
still up
2021-05-21
odown.io
moved
2023-08-09
hawkflow.ai
unverified
2023-03-09
swishjam.com
moved
2021-08-08
beta.rocketcompute.com
gone
2021-07-27
bitcoind.observer
gone
2023-09-05
kshivendu.dev
still up
2022-06-20
tunnelhub.io
still up
2023-09-06
watchmyssl.com
unverified
2021-07-15
checkify.io
unverified
2026-09-06
openmonitor.website
unverified
2023-05-17
printnanny.ai
gone
2023-12-13
pandapatrol.io
moved
2022-04-28
leafnode.nl
still up
2023-06-15
priceincheck.com
gone
2023-11-08
uptimefunk.com
still up
2022-07-21
cast.ai
still up

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.