You asked about Search
19 people built something like it. 2 are gone.
That is 12% of the ones whose fate we could settle, against 23% across the whole register. 2 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2024-06-01 | YCConveo Growth through always‑on consumer understanding · conveo.ai | still up |
| 2024-01-01 | YCReducto The complete agentic document platform · reducto.ai | still up |
| 2024-01-01 | YCOnyx Open Source AI Chat · onyx.app | acquired |
| 2024-09-01 | YCOrigami Get your perfect customers with one prompt · origami.chat | still up |
| 2024-01-01 | AI research lab automating all of investing · ehl.markets | still up |
| 2024-01-01 | YCego AI applied research lab building synthetic sapience; human-like AI · egoai.com | still up |
| 2024-01-01 | Applied AI Data Research Lab Encoding Human Expertise into Machines… · useocular.com | still up |
| 2024-09-01 | YCAbundant Agent simulation and RL for researchers · abundant.ai | still up |
| 2024-01-01 | YCTrieve All-in-one API for search, RAG, & recommendations · trieve.ai | acquired |
| 2024-06-01 | Powerful quantitative forecasting models · zoaresearch.com | still up |
| 2024-06-01 | YCAnara AI for researchers · anara.com | still up |
| 2024-01-01 | People search powered by AI · happenstance.ai | still up |
| 2024-06-01 | YCSharpe Agents for quantitative research and financial data science. · sharpe.sh | still up |
| 2024-06-01 | YCCheers Win local search on ChatGPT & other LLMs · cheers.tech | still up |
| 2024-01-01 | YCGlimmer AI search for massive PDFs · withglimmer.com | gone |
| 2024-01-01 | YCMetofico No Code Data Analysis for Life Science Research · metofico.com | still up |
| 2024-09-01 | YCRiveter Turn the web into structured data · riveterhq.com | still up |
| 2024-01-01 | YCLumona AI-enabled search engine featuring insights from social media. · lumona.ai | gone |
| 2024-06-01 | An AI agent for scientific research · undermind.ai | 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.