You asked about Developer Tools
15 people built something like it. 4 are gone.
That is 31% of the ones whose fate we could settle, against 23% across the whole register. 2 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2022-01-01 | YCBotCity Observability and Governance for AI-Generated Python scripts. · botcity.dev | still up |
| 2022-01-01 | YCUnlayer AI-powered content creation infrastructure for apps · unlayer.com | still up |
| 2022-06-01 | YCAxle AI-native clearinghouse for insurance · axle.insure | still up |
| 2022-06-01 | YCIntuned Code-first scrapers and RPAs — built and maintained by AI · intunedhq.com | still up |
| 2022-06-01 | YCLamin Open data platform for traceable, multimodal AI · lamin.ai | still up |
| 2022-01-01 | Artificially Intelligent Corporations · mutable.ai | acquired |
| 2022-01-01 | YCPloomber Heroku for AI · ploomber.io | gone |
| 2022-01-01 | No-Code LLM Application / Workflow Builder · queryvary.com | still up |
| 2022-01-01 | YCBeam AI-Native Cloud Platform · beam.cloud | still up |
| 2022-06-01 | No-code data curation for LLM fine-tuning and evaluation. · airtrain.ai | gone |
| 2022-06-01 | API for Retrieval Augmented Generation · superpowered.ai | gone |
| 2022-01-01 | We make Orca, MIT open source terminal-based agent orchestrator · onorca.dev | still up |
| 2022-06-01 | YCInstant The best backend for AI-coded apps · instantdb.com | acquired |
| 2022-06-01 | YCBricksAI Streamlining LLM application management for enterprises · trybricks.ai | gone |
| 2022-01-01 | YCT3 Chat The best AI chat you've ever used · t3.chat | 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.