You asked about Developer Tools
70 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.
| Launched | What it was | Today |
|---|---|---|
| 2023-12-22 | heynote.com | still up |
| 2023-02-01 | trigger.dev | still up |
| 2023-01-24 | infisical.com | still up |
| 2023-06-20 | inngest.com | still up |
| 2023-01-01 | Security infrastructure for developers and agents · infisical.com | still up |
| 2023-01-01 | YCResend Email for developers · resend.com | still up |
| 2023-03-13 | builtwithdjango.com | still up |
| 2023-09-15 | sqlfordevs.com | still up |
| 2023-01-01 | YCEscape Offensive security for the teams that are 100x outnumbered · escape.tech | still up |
| 2023-01-01 | The #1 Actionable FinOps Platform · cloudchipr.com | still up |
| 2023-01-01 | YCExtend Production-ready document processing · extend.ai | still up |
| 2023-01-01 | YCDepot Software delivery built for machine scale. · depot.dev | still up |
| 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 |
| 2023-06-01 | YCTerminal Plaid for Telematics Data in Commercial Trucking · withterminal.com | still up |
| 2023-06-01 | YCArtie Software that streams data from databases to warehouses in real-time · artie.com | still up |
| 2023-01-01 | Build your control plane to deploy your product in your customer VPC… · omnistrate.com | still up |
| 2023-09-26 | cssbattle.dev | still up |
| 2023-06-30 | app.e2b.dev | still up |
| 2023-01-01 | YCCosine Fully Agentic SWE · cosine.sh | still up |
| 2023-01-01 | YCInfinia Move money programmatically - built for developers · infiniaweb.com | still up |
| 2023-06-01 | YCParadeDB You should just use Postgres. · paradedb.com | still up |
| 2023-11-02 | brian.dev | still up |
| 2023-01-01 | YCPierre Pierre is a new, opinionated, git platform. · pierre.co | still up |
| 2023-01-01 | YCReflex The operating system for building mission-critical enterprise apps. · reflex.dev | still up |
| 2023-01-01 | YCBoundary The programming language for AI · boundaryml.com | still up |
| 2023-06-01 | YCrefine Open-source Retool for enterprise · refine.dev | still up |
| 2023-01-01 | YCLiteLLM Call every LLM API like it's OpenAI [100+ LLMs] · litellm.ai | still up |
| 2023-01-01 | YCIcePanel Design and explain complex software architecture. · icepanel.io | still up |
| 2023-01-01 | Build and deploy fully‑managed AI agents and workflows · trigger.dev | still up |
| 2023-06-08 | message-silo.dev | still up |
| 2023-06-01 | YCTempo Visual Editor for React, powered by AI · tempo.new | still up |
| 2023-06-01 | YCSilimate Fast, efficient agents for chip design and debug · silimate.com | still up |
| 2023-01-01 | YCDrDroid Your best friend in production. · drdroid.io | still up |
| 2023-01-01 | YCSkyhook PaaS-like experience with the power of Kubernetes, on your cloud · skyhook.io | still up |
| 2023-03-20 | micro.dev | still up |
| 2023-01-01 | YCFastgen Webflow for the Backend · fastgen.com | still up |
| 2023-05-03 | spotlight.dev | still up |
| 2023-01-01 | YCChima Building infrastructure tools to help large companies customize their… · withchima.com | still up |
| 2023-06-06 | docs.kedehub.io | still up |
| 2023-06-01 | YCCorgea Corgea finds, and fixes insecure code and packages autonomously. · corgea.com | still up |
| 2023-01-01 | YCPropexo Plaid for Commercial Real Estate · propexo.com | still up |
| 2023-01-01 | YCNango A single API for all your integrations · nango.dev | still up |
| 2023-06-01 | YCCedana Fast, reliable, reproducible AI with GPU live migration · cedana.ai | still up |
| 2023-05-09 | chatcraft.org | still up |
| 2023-04-24 | phase.dev | still up |
| 2023-01-01 | Dataset Management for AI Trainers · truthsuite.com | still up |
| 2023-06-01 | YCSweep The best AI coding assistant for JetBrains · sweep.dev | still up |
| 2023-06-01 | YCTrainy Infrastructure for managing GPU clusters for training/serving. · trainy.ai | still up |
| 2023-01-01 | Automating root cause analysis with generative AI · wildmoose.ai | still up |
| 2023-01-01 | Design and build great interfaces · designbase.com | still up |
| 2023-06-01 | YCMorph Fast Models Optimized for Coding Agents · morphllm.com | still up |
| 2023-06-01 | Infuse knowledge into language models with just 10 samples · automorphic.ai | still up |
| 2023-06-01 | The world's first unified interface for agent harnesses. · epsilla.com | still up |
| 2023-06-01 | YCCORE Your AI butler that understands you really well and proactively acts… · getcore.me | still up |
| 2023-06-01 | AI-powered Infrastructure as Code PR reviews · tryterracotta.com | still up |
| 2023-01-01 | YCSuperAPI Programmable API gateway that makes APIs cacheable · trysuperapi.com | still up |
| 2023-06-01 | YCsudocode orchestrate your coding agents with sudocode · sudocode.ai | still up |
| 2023-01-01 | YCSage AI Your self-generating, self-maintaining code knowledge base. · sage-ai.dev | still up |
| 2023-01-01 | YCBuildJet High-performance computing cloud · buildjet.com | 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.