You asked about Engineering, Product and Design
72 people built something like it. 6 are gone.
That is 9% of the ones whose fate we could settle, against 23% across the whole register. 8 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2023-01-01 | YCPirros AI Platform for Architects and Engineers · pirros.com | still up |
| 2023-06-01 | YCGiga AI Support Agent for Enterprises. · giga.ai | still up |
| 2023-01-01 | YCLangfuse Open source LLM engineering platform · langfuse.com | acquired |
| 2023-06-01 | YCTiptap The open-source document editor for humans and AI agents. · tiptap.dev | still up |
| 2023-01-01 | YCInkeep Build AI Agent teammates and automations in code or no-code · inkeep.com | still up |
| 2023-01-01 | Go from idea to production with AI. · magicpatterns.com | still up |
| 2023-06-01 | AI for Government Contracting. · sweetspot.so | still up |
| 2023-01-01 | Build and deploy fully‑managed AI agents and workflows · trigger.dev | still up |
| 2023-01-01 | Phone AI that Captures Every Dealership Revenue Opportunity · shortloop.dev | still up |
| 2023-06-01 | YCTempo Visual Editor for React, powered by AI · tempo.new | still up |
| 2023-06-01 | YCSpine AI Manage a swarm of AI agents to get real work done · getspine.ai | still up |
| 2023-06-01 | YCSID AI research lab for retrieval · sid.ai | still up |
| 2023-01-01 | AI agents for end-to-end testing · trynarrative.com | still up |
| 2023-01-01 | AI-powered game translation. · magnaplay.com | still up |
| 2023-06-01 | AI for ASIC Design Verification · bronco.ai | still up |
| 2023-01-01 | YCLume Speed up customer implementation with AI · lume.ai | acquired |
| 2023-01-01 | YCLynx AI platform for investigating and resolving engineering incidents · uselynx.ai | gone |
| 2023-06-01 | Open source GenAI development platform · flowiseai.com | acquired |
| 2023-06-01 | YCSweep The best AI coding assistant for JetBrains · sweep.dev | still up |
| 2023-06-01 | Aide is an AI-native , privacy-first IDE built on top of VSCode · aide.dev | gone |
| 2023-01-01 | YCFrigade AI-powered product assistance for modern software teams · frigade.com | still up |
| 2023-06-01 | The API for LLM tool use · opentools.com | still up |
| 2023-01-01 | Automating root cause analysis with generative AI · wildmoose.ai | still up |
| 2023-01-01 | YCVersive AI-first user research platform · getversive.com | still up |
| 2023-01-01 | YCCardinal Your AI product backlog · cardinalapp.io | acquired |
| 2023-01-01 | AI Powered Product Discovery · rubberduckylabs.io | gone |
| 2023-01-01 | AI coding copilot engineered for performance · double.bot | still up |
| 2023-06-01 | YCInari Your junior AI product manager · useinari.com | acquired |
| 2023-01-01 | Helps Developers build stunning UI Lightning Fast ⚡️ · codeparrot.ai | gone |
| 2023-06-01 | YCMetoro AI SRE For Teams on Kubernetes · metoro.io | still up |
| 2023-06-01 | YCBaserun Observability and evaluation platform for LLM apps. · baserun.ai | still up |
| 2023-01-01 | YCDashdive Break down AI and cloud costs by feature and customer · dashdive.com | acquired |
| 2023-06-01 | YCVango AI Development platform that makes it 10x easier to improve visual models · vango.ai | gone |
| 2023-01-01 | YCSage AI Your self-generating, self-maintaining code knowledge base. · sage-ai.dev | still up |
| 2023-06-01 | YCRepaint Build a website by chatting with AI · repaint.com | still up |
| 2023-01-01 | YCLightski Transform Document Workflows with AI Agents · lightski.com | still up |
| 2023-01-01 | Resolve PR check failures instantly with AI · technician.dev | gone |
| 2023-01-01 | YCAlloy AI prototyping tool for product managers · alloy.app | still up |
| 2023-08-07 | chainforge.ai | still up |
| 2023-06-27 | flux.ai | still up |
| 2023-06-01 | End-to-end content, learning, & deal intelligence for B2B sales teams · letter.ai | still up |
| 2023-06-01 | YCLangdock The all-in-one AI platform for companies. · langdock.com | still up |
| 2023-04-27 | designer.microsoft.com | still up |
| 2023-01-01 | Automate data-driven slide decks and documents with AI · rollstack.com | still up |
| 2023-06-01 | YCkapa.ai The fastest way to build AI assistants on technical content · kapa.ai | still up |
| 2023-01-01 | YCFloworks Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA · floworks.ai | still up |
| 2023-01-29 | dystr.com | still up |
| 2023-11-27 | aigaragesale.com | still up |
| 2023-04-08 | aiproduct.tools | still up |
| 2023-01-01 | The Control Plane for Enterprise Agents · credal.ai | still up |
| 2023-04-25 | testflight.apple.com | still up |
| 2023-06-01 | AI that audits AI — catching hallucinations before you ship them. · energent.ai | still up |
| 2023-01-01 | Generative AI for protein design · diffuse.bio | still up |
| 2023-05-27 | caspa.ai | still up |
| 2023-07-27 | readyrunner.ai | unverified |
| 2023-06-01 | YCFiber AI The freshest data APIs for AI sales, recruiting, & growth products · fiber.ai | still up |
| 2023-11-09 | allcancode.com | still up |
| 2023-06-01 | YCCedalio AI agents that automate AP, procurement, and finance · cedalio.com | still up |
| 2023-09-14 | officeautomata.com | unverified |
| 2023-02-10 | artify.co | still up |
How this compares
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.
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.