You asked about Open Source

30 people built something like it. 5 are gone.

That is 19% of the ones whose fate we could settle, against 23% across the whole register. 4 were acquired.

Matching
36
Gone
19%
Median life
Acquired
4

Matching launches

checked 7 hours ago · 250 probed today
LaunchedWhat it wasToday
2021-02-06
libretranslate.com
still up
2023-01-01
Instantly offer SDKs and API Docs · buildwithfern.com
acquired
2023-03-07
yobulk.dev
gone
2022-06-01
API first electronic health record (EHR) that is open source · medplum.com
still up
2022-04-03
fusio-project.org
still up
2023-03-14
aichatbestie.com
unverified
2010-01-01
Video Encoding API, Open source video player (video.js) · zencoder.com
acquired
2023-01-01
Call every LLM API like it's OpenAI [100+ LLMs] · litellm.ai
still up
2023-10-12
markdowndb.com
still up
2023-06-01
Open Source AI Agent to automate browser workflows via an API · skyvern.com
still up
2024-01-01
All-in-one API for search, RAG, & recommendations · trieve.ai
acquired
2022-10-18
usebruno.com
still up
2023-01-01
A single API for all your integrations · nango.dev
still up
2021-03-25
hoppscotch.io
still up
2023-02-17
embedbase.xyz
unverified
2021-09-08
mockachino.com
gone
2023-08-08
litellm.ai
still up
2022-05-06
youonlygetanapi.com
gone
2025-09-01
API for unlimited, durable, real-time streams · s2.dev
still up
2022-06-01
The API to search, scrape, and interact with the web at scale. 🔥 · firecrawl.dev
still up
2022-01-01
Open-source API & UI test automation · karatelabs.io
still up
2020-01-01
Open Finance API platform for Latam. · belvo.com
still up
2023-03-05
chatgptbay.com
gone
2023-03-30
meteosource.com
still up
2023-02-14
openapi.security
gone
2023-03-06
zuplo.com
still up
2023-07-17
gpt342.s3.us-east-1.amazonaws.com
unverified
2022-11-15
whisperapi.com
still up
2023-01-01
Usage Metering, AI & API Monetization · openmeter.io
acquired
2021-01-31
japan-api.github.io
unverified
2022-06-28
hasura.io
still up
2023-12-26
aisbreaker.org
still up
2026-09-04
vlmrun.com
unverified
2023-05-04
llm.report
unverified
2026-06-01
OpenRouter for Voice AI: one API, every call on the best speech model · speko.ai
still up
2023-06-01
The API for LLM tool use · opentools.com
still up

How this compares

Where they launched

share gone · line is the 23% average
  1. Show HN 1631%
  2. Y Combinator 100%

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.