You asked about Web Development
22 people built something like it. 1 is gone.
That is 6% of the ones whose fate we could settle, against 23% across the whole register. 5 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2023-06-01 | YCrefine Open-source Retool for enterprise · refine.dev | still up |
| 2023-01-01 | YCReflex The operating system for building mission-critical enterprise apps. · reflex.dev | still up |
| 2023-06-01 | YCMocha Build and publish web apps in minutes. No coding required. · getmocha.com | acquired |
| 2023-06-01 | YCTremor The UI toolkit for Dashboards · tremor.so | acquired |
| 2023-06-01 | YCRepaint Build a website by chatting with AI · repaint.com | still up |
| 2023-01-01 | YCLittio Dollar banking for people in Latin America · littio.co | still up |
| 2023-01-01 | YCFastgen Webflow for the Backend · fastgen.com | still up |
| 2023-01-01 | YCKoywe Crypto On and Off Ramp for Latam · koywe.com | still up |
| 2023-01-01 | YCOhm Ohm helps engineering teams accelerate hardware development & testing. · ohm.ai | still up |
| 2023-06-01 | Building the AI-powered marketing ops platform that turns website… · withsurface.com | still up |
| 2023-01-01 | YCZeroDev Account abstraction wallets as a service · zerodev.app | still up |
| 2023-06-01 | Open source GenAI development platform · flowiseai.com | acquired |
| 2023-06-01 | YCGlide Crypto Deposits, Wallet Funding, and Pay-with-crypto Infra · buildwithglide.com | acquired |
| 2023-06-01 | Web, Desktop, and Mobile apps with one codebase in Rust · dioxuslabs.com | acquired |
| 2023-01-01 | YCAdri AI Your AI Partner for SAP Development · getadri.ai | still up |
| 2023-06-01 | YCRankai RankAI grows your website on autopilot · rankai.ai | still up |
| 2023-01-01 | YCTheya The world's simplest Bitcoin self-custody solution · theya.us | still up |
| 2023-01-01 | Tool and platform to create and sell webcomics · storyboarder.com | still up |
| 2023-06-01 | YCVango AI Development platform that makes it 10x easier to improve visual models · vango.ai | gone |
| 2023-06-01 | YCWebhound Long-horizon research agents · webhound.ai | still up |
| 2023-06-01 | YCReworkd The simplest way to extract web data at scale · reworkd.ai | still up |
| 2023-01-01 | YCKV Cash KV Cash, a blockchain where contracts can finally think · kv.cash | still up |
How this compares
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.