You asked about Chat
21 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register. 3 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2018-06-01 | YCLeena AI We at Leena AI build a virtual assistant that answers employee's… · leena.ai | still up |
| 2020-06-01 | AI-powered user assistance platform · command.ai | acquired |
| 2021-01-01 | AI-powered customer service for startups · cloudhumans.com | still up |
| 2009-06-01 | YCOlark Olark gives you an AI agent that works your marketing funnel 24/7 · olark.com | still up |
| 2024-01-01 | YCOnyx Open Source AI Chat · onyx.app | acquired |
| 2022-06-01 | Create video by chatting to AI · wondercraft.ai | still up |
| 2024-09-01 | YCCekura Voice AI and Chat AI agents: Testing and Observability · cekura.ai | still up |
| 2021-01-01 | YCChatwoot The modern, open source, self-hosted AI customer support platform · chatwoot.com | still up |
| 2024-06-01 | YCCoval Simulation & Evaluation that scales voice and chat AI agents · coval.dev | still up |
| 2018-06-01 | Conversation Design platform to build Al Assistants tailored to your… · quickchat.ai | still up |
| 2025-01-01 | Open Source React.js Library for AI Chat · assistant-ui.com | still up |
| 2023-06-01 | YCChatter Dead simple LLM testing and iteration · chatter.anish.xyz | acquired |
| 2022-01-01 | YCT3 Chat The best AI chat you've ever used · t3.chat | still up |
| 2023-06-01 | YCRepaint Build a website by chatting with AI · repaint.com | still up |
| 2025-01-01 | YCSwerve Chat with AI Characters · getswerve.com | still up |
| 2026-01-01 | Notion for AI chats · skillsync.com | still up |
| 2025-06-01 | YCRowFlow Replacing forms with AI conversations · rowflow.ai | still up |
| 2023-01-01 | AI coding copilot engineered for performance · double.bot | still up |
| 2022-01-01 | YCBlink Build fully functional apps with AI. · blink.new | still up |
| 2024-01-01 | Gives non-technical team members agents that work right out of the box · usesolari.ai | still up |
| 2021-06-01 | YCSoco Visual AI shopping · socosearch.com | 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.