You asked about Recommendation System

45 people built something like it. 8 are gone.

That is 18% of the ones whose fate we could settle, against 23% across the whole register.

Matching
54
Gone
18%
Median life
Acquired
0

Matching launches

checked 9 hours ago · 250 probed today
LaunchedWhat it wasToday
2022-01-01
The real-time retrieval engine for search, feeds, and agents. · shaped.ai
still up
2022-05-26
vertigo.ai
unverified
2022-05-23
getnora.page
gone
2022-06-03
webosarchive.com
unverified
2022-03-24
neverinstall.com
still up
2022-11-24
flowbite.com
still up
2022-03-12
system.com
still up
2022-10-04
optemization.com
still up
2022-01-11
supernova.io
still up
2022-10-18
lunchbox.io
still up
2022-02-28
firmbee.com
still up
2022-05-24
systemflow.co
unverified
2022-05-07
reshaped.so
still up
2022-02-07
abstractops.com
still up
2022-05-20
lettertribe.com
gone
2022-05-05
skill-focus.com
unverified
2022-04-17
eccco.space
unverified
2022-10-30
thevcos.com
still up
2022-07-06
cred.club
still up
2022-04-05
getvivid.app
still up
2022-03-09
cabanaui.com
still up
2022-01-01
AI-native operating system for home service businesses · broccoli.com
still up
2022-01-01
Robots for longer-lasting, better-tasting fish at scale. · shinkei.systems
still up
2022-06-16
lockable.dev
unverified
2022-06-01
Ecosystem for options trading in India · algotest.in
still up
2022-11-25
search.rye.com
gone
2022-04-23
reddrecs.com
still up
2022-01-01
Building the operating system for business in LATAM · quikpago.com
still up
2022-01-01
The next-gen lending platform for the banking system in LATAM. · getlenk.com
still up
2022-01-24
nootroflix.com
still up
2022-01-01
The operating system for factory production lines · aisupervision.com
gone
2022-04-20
corise.com
gone
2022-01-01
Building systems to remove carbon dioxide from air at industrial scale · airmyne.com
still up
2022-01-01
AI-driven HVAC control system for improved energy performance · axross.co
still up
2022-08-22
jamsync.io
gone
2022-05-27
personalfilesystem.org
gone
2022-01-01
We deliver toll-free internet apps · simplifyd.com
still up
2022-03-16
contentblocksjs.com
unverified
2022-06-01
Work operating system for professional service businesses · getcone.io
still up
2022-08-10
juicefs.com
still up
2022-12-21
workat.tech
still up
2022-01-01
Automated WireGuard networks for distributed systems and Kubernetes · netmaker.io
still up
2022-06-09
getgwak.com
still up
2022-03-28
neverinstall.com
still up
2022-01-01
The Operating System of the construction industry · hippo.build
still up
2022-12-07
mutagen.io
still up
2022-05-15
poppy.io
unverified
2022-01-01
The System of Action for Conversation Data · spinach.ai
still up
2022-08-02
mypelotonclasses.com
gone
2022-11-15
thoughtfulpost.com
unverified
2022-06-01
Operating system for HR in the AI era · aragorn.ai
still up
2022-01-01
Targeting the Tumor Ecosystem to address cancer drug resistance. · alixia.com
still up
2022-06-01
AI Models for GIS · buntinglabs.com
still up
2022-01-01
The Operating System of Hollywood · cinapse.io
still up

How this compares

Where they launched

share gone · line is the 23% average
  1. Product Hunt 1513%
  2. Show HN 1242%
  3. Y Combinator 186%

Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.

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.