You asked about Design Tools
101 people built something like it. 7 are gone.
That is 7% of the ones whose fate we could settle, against 23% across the whole register. 1 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2024-06-01 | AI Agents for collections · domu.ai | still up |
| 2024-01-01 | YCGreptile AI code review agent with complete context of your codebase · greptile.com | still up |
| 2024-01-01 | Real-time and two-way sync between CRMs and Databases · stacksync.com | still up |
| 2024-01-01 | YCReducto The complete agentic document platform · reducto.ai | still up |
| 2024-01-01 | Autonomous offensive and defensive cybersecurity platform · codeant.ai | still up |
| 2024-01-01 | YCOpen Enterprise AI customer support · open.cx | still up |
| 2024-06-01 | YCd_model Look inside the model · dmodel.ai | still up |
| 2024-09-01 | YCCekura Voice AI and Chat AI agents: Testing and Observability · cekura.ai | still up |
| 2024-06-01 | YCEntangl Find & resolve issues in data center engineering & operations using AI · entangl.com | still up |
| 2024-01-01 | YCMomentic The agentic quality platform for web and mobile · momentic.ai | still up |
| 2024-01-01 | YCDraftaid Go from 3D models to CAD drawings using AI · draftaid.io | still up |
| 2024-01-01 | Autonomous organizations without humans in the loop · andonlabs.com | still up |
| 2024-06-01 | YCCoval Simulation & Evaluation that scales voice and chat AI agents · coval.dev | still up |
| 2024-06-01 | Automate circuit board design using AI · diode.computer | still up |
| 2024-01-01 | YCRaindrop Sentry for AI Agents · raindrop.ai | still up |
| 2024-06-01 | YCSpur Spur is your AI QA Engineer. Test your websites with natural language. · spurtest.com | still up |
| 2024-06-01 | Run a team of coding agents on your Mac · conductor.build | still up |
| 2024-06-01 | Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs. · unsloth.ai | still up |
| 2024-06-01 | Complete QA platform for voice agents · hamming.ai | still up |
| 2024-01-01 | YCFeldy Field-First AI for home services · feldy.ai | still up |
| 2024-06-01 | YCHexclave The user infrastructure platform · hexclave.com | still up |
| 2024-06-01 | YCHelium Self Improving Software · tryhelium.com | still up |
| 2024-06-01 | The Enablement Layer for Physical AI · saphira.ai | still up |
| 2024-01-01 | YCPazi Platform where autonomous companies are built · pazi.ai | still up |
| 2024-09-01 | The Localization Engineering Platform · lingo.dev | still up |
| 2024-06-01 | YCLaminar Understand why your AI agent breaks. Iterate fast to fix it. · laminar.sh | still up |
| 2024-06-01 | YCMaitai Reliable, self-improving enterprise AI · trymaitai.com | still up |
| 2024-06-01 | YCVoker The Agent Analytics Platform · voker.ai | still up |
| 2024-09-01 | YCCapy The IDE for the parallel age · capy.ai | still up |
| 2024-01-01 | YCMarblism AI Employees who love overtime · marblism.com | still up |
| 2024-01-01 | YCInteguru Generate fast, reliable APIs for any platform · integuru.com | still up |
| 2024-01-01 | YCMillion Tools for agent verification · million.dev | still up |
| 2024-06-01 | YCHeroUI The UI framework for AI agents and developers to build beautiful apps. · heroui.com | still up |
| 2024-09-01 | YCVariant Creative intelligence · variant.com | still up |
| 2024-01-01 | YCatopile We make tools to design electronics circuit boards with code · atopile.io | still up |
| 2024-06-01 | An AI physics simulator for AI chip design · deepsim.io | still up |
| 2024-06-01 | Enzyme design models. · ligo.bio | still up |
| 2024-06-01 | YCcamfer Building the world’s first AI mechanical engineer. · camfer.dev | gone |
| 2024-01-01 | YCDuckie Build AI Support Agents in Minutes · duckie.ai | still up |
| 2024-09-01 | YCFreebuff The free coding agent · freebuff.com | still up |
| 2024-01-01 | QA agents that write tests 10x faster with zero maintenance · getdecipher.com | still up |
| 2024-06-01 | EDA for Industrial Control Systems · outerport.com | still up |
| 2024-01-01 | YCTusk AI agent that generates unit and integration tests · usetusk.ai | acquired |
| 2024-06-01 | An AI-powered CAD software · hestus.co | still up |
| 2024-09-01 | YCvly.ai The Lovable & Replit killers · vly.ai | still up |
| 2024-06-01 | YCPolymet AI Product Designer · polymet.ai | still up |
| 2024-09-01 | YCRelvy AI AI powered debugging notebooks for incident response · relvy.ai | still up |
| 2024-06-01 | YCMagiCode A Reliable AI Frontend Engineer · magicode.ai | still up |
| 2024-06-01 | YCAluna Data for biomedical AI · alunadata.com | still up |
| 2024-06-01 | AI agent that optimizes inference for embedded compute like Jetson · runlocal.ai | still up |
| 2024-01-01 | YCReprompt AI Agents for Location · repromptai.com | still up |
| 2024-01-01 | YCBilanc AI-Powered Engineering Productivity · bilanc.co | still up |
| 2024-06-01 | YCHyrex The COLD Task Framework · hyrex.io | still up |
| 2024-06-01 | YCInvaria The next generation logging and observability platform · invaria.com | gone |
| 2024-06-01 | ComfyUI for everyone on your team · comfydeploy.com | still up |
| 2024-09-01 | YCStruct Agents that keep prod running · struct.ai | still up |
| 2024-09-01 | YCSurge Stripe for telephony · surge.app | still up |
| 2024-09-01 | YCKilvin Build your own desktop · kilvin.ai | still up |
| 2024-09-01 | YCAlex The Cursor for Xcode · alexcodes.app | still up |
| 2024-01-01 | API For PDF Document Workflows · fileforge.com | gone |
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.