You asked about Social Network
369 people built something like it. 134 are gone.
That is 42% of the ones whose fate we could settle, against 23% across the whole register. 47 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2005-06-01 | YCReddit The frontpage of the internet. · reddit.com | acquired |
| 2007-01-01 | YCTwitch A global community creating the future of live entertainment. · twitch.com | acquired |
| 2022-04-16 | slowsocial.us | still up |
| 2022-01-31 | identi.app | still up |
| 2022-04-01 | inside.com | gone |
| 2022-11-23 | handlefinder.com | unverified |
| 2021-01-20 | sundayy.app | gone~28mo |
| 2021-05-27 | redact.dev | still up |
| 2022-01-25 | hey.cafe | still up |
| 2022-04-18 | simplylocal.app | moved |
| 2017-06-01 | YCMuzz Where Single Muslims meet · muzz.com | still up |
| 2022-01-26 | pepul.com | still up |
| 2022-05-02 | kontxt.io | still up |
| 2022-10-15 | mynotion.space | gone |
| 2023-05-20 | map.name | still up |
| 2019-06-01 | YCLineLeap LineLeap gets customers to the fun, faster. · lineleap.com | still up |
| 2012-06-01 | YC9gag Make the world happier. · 9gag.com | still up |
| 2018-01-01 | YCZyper Recreating social networks for brands. · zyper.com | acquired |
| 2017-01-01 | YCMednet Mednet helps doctors answer their toughest clinical questions —… · themednet.org | still up |
| 2026-09-07 | gettogether.dev | unverified |
| 2022-06-25 | ferris.app | unverified |
| 2021-02-18 | kalaksi.com | still up |
| 2022-12-13 | sup.audio | still up |
| 2022-01-13 | identi.app | still up |
| 2024-01-01 | The integration layer for live events infrastructure · crowdvolt.com | still up |
| 2015-01-01 | YCSmyte Smyte stops bad actors on social networks and marketplaces. · smyte.com | acquired |
| 2017-06-01 | YCFam Video calling social network to talk with friends and make new friends · famapp.com | gone |
| 2023-12-19 | agorasocial.app | unverified |
| 2021-06-01 | YCCafé Your Workplace Engagement Hub · at.cafe | still up |
| 2023-06-28 | genhub.ai | unverified |
| 2021-01-01 | YourQuote is India's largest writing platform · yourquote.in | gone |
| 2020-06-01 | YCHere Where friends watch, play and hang together in digital rooms · here.fm | gone |
| 2021-09-06 | touchbase.id | unverified |
| 2022-11-24 | about.opendolphin.social | gone |
| 2022-04-27 | taaalk.co | still up |
| 2024-01-01 | YCWhip A social feed for interactive AI Creations · whip.run | still up |
| 2023-11-26 | blog.spacehey.com | still up |
| 2021-02-24 | podaero.com | gone~14mo |
| 2021-10-20 | vers.social | still up |
| 2019-06-01 | Souffle Club:10x better LinkedIn alternative with profiles >> resumes · souffle.club | gone |
| 2025-09-01 | YCDigipals The future of Social in the age of AI · digipals.app | still up |
| 2012-01-01 | Help families stay in touch · familyleaf.com | acquired |
| 2025-01-01 | The social network layer for AI apps · a1zap.com | still up |
| 2006-06-01 | YCJamglue jamglue.com | gone |
| 2010-06-01 | YCFridge Disposable social networks. · frid.ge | acquired |
| 2024-01-01 | YCDeep24 AI coach for your entire life · deep24.com | still up |
| 2011-06-01 | YCEveryme The #1 private social network · everyme.com | gone |
| 2019-01-01 | YCBasement The social network for your close friends. · basement.social | gone |
| 2020-01-01 | YCGiveAway Community driven marketplace for used things · giveaway.mobi | still up |
| 2012-06-01 | We turn Patients into Researchers. · crohnology.com | gone |
| 2022-05-24 | peerlist.io | unverified |
| 2018-01-01 | YCSuper Super is the first and leading Indonesian social commerce platform · superapp.id | still up |
| 2011-06-01 | We’re building the world’s bank payment network. · gocardless.com | still up |
| 2022-03-27 | networksfromscratch.com | gone |
| 2022-04-11 | reflect.app | still up |
| 2008-01-01 | Pioneers of mobile social gaming. · mz.com | acquired |
| 2022-04-21 | beondeck.com | moved |
| 2022-02-28 | booqsi.com | still up |
| 2022-04-07 | at.cafe | still up |
| 2022-11-10 | tomoclub.org | still up |
How this compares
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.
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
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.