You asked about SaaS
56 people built something like it. 5 are gone.
That is 10% of the ones whose fate we could settle, against 23% across the whole register. 5 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2023-01-01 | YCNumeral The AI-native sales tax solution. · numeral.com | still up |
| 2023-06-01 | YCCampfire The AI Native ERP for the fastest growing companies. · campfire.ai | still up |
| 2023-01-01 | AI-based full stack observability platform · middleware.io | still up |
| 2023-06-01 | YCOutset AI-powered user interviews · outset.ai | still up |
| 2023-01-01 | YCTruewind AI-Powered Accounting · truewind.ai | still up |
| 2023-06-01 | YCCercli AI powered HR and Recruitment for people teams · cercli.com | still up |
| 2023-06-01 | YCStrada AI agents that run insurance operations · getstrada.com | still up |
| 2023-06-01 | YCElyos AI AI Customer Service Agents for trades and field services · elyos.ai | still up |
| 2023-01-01 | YCMetal The AI context platform for private capital. Everything your firm… · metal.ai | still up |
| 2023-06-01 | AI Agents For RFP and Questionnaire Response Automation · inventive.ai | still up |
| 2023-06-01 | AI revenue recovery for underpaid healthcare claims. · clearesthealth.com | still up |
| 2023-06-01 | YCAlguna AI-Native CPQ & Billing for Modern Pricing Models · alguna.com | still up |
| 2023-01-01 | YCMantys AI agents for healthcare and insurance operations in GCC · mantys.io | still up |
| 2023-01-01 | Build and deploy fully‑managed AI agents and workflows · trigger.dev | still up |
| 2023-01-01 | Know what your LLM is doing — and why it’s failing · traceloop.com | acquired |
| 2023-06-01 | YCFiber AI The freshest data APIs for AI sales, recruiting, & growth products · fiber.ai | still up |
| 2023-01-01 | YCPalomma AI & financial services for real estate in LatAm, starting by rent · palomma.com | still up |
| 2023-01-01 | AI-Powered Clinical Decision Support & Ambient Scribing · glass.health | still up |
| 2023-06-01 | YCSpine AI Manage a swarm of AI agents to get real work done · getspine.ai | still up |
| 2023-07-31 | superflows.ai | still up |
| 2023-01-01 | The AI Agent platform for finance · concourse.co | still up |
| 2023-06-01 | YCAiSDR AI sales prospecting. Replace your SDR with AiSDR · aisdr.com | still up |
| 2023-06-01 | We get patients to their next appointment · simbie.ai | still up |
| 2023-01-01 | YCLume Speed up customer implementation with AI · lume.ai | acquired |
| 2023-01-01 | YCType AI-native storytelling studio. · type.ai | still up |
| 2023-01-01 | YCFrigade AI-powered product assistance for modern software teams · frigade.com | still up |
| 2023-06-01 | Using generative AI to call insurance for healthcare clinics · healthharbor.co | still up |
| 2023-01-01 | YCOrchid AI-powered EHR for independent mental health professionals · orchid.health | still up |
| 2023-01-01 | YCHaven AI workforce for property management · usehaven.ai | still up |
| 2023-06-01 | AI Voice and SMS Agents for Healthcare · wattsonhealth.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 | YCPropRise The AI platform for CRE investment teams · proprise.ai | still up |
| 2023-06-01 | AI Overview Search, as a Service · branch-ai.com | gone |
| 2023-01-01 | YCHelios Create your AI workforce · usehelios.ai | still up |
| 2023-01-01 | YCRetape AI Operating System for Debt Settlement · retape.ai | still up |
| 2023-01-01 | Automating root cause analysis with generative AI · wildmoose.ai | still up |
| 2023-01-01 | AI Agent for Cloud Infrastructure · infra.new | still up |
| 2023-01-01 | YCVersive AI-first user research platform · getversive.com | still up |
| 2023-06-01 | YCEpsilla All-in-one platform to create AI agents with your private knowledge · epsilla.com | still up |
| 2023-01-01 | YCCardinal Your AI product backlog · cardinalapp.io | acquired |
| 2023-01-01 | YCStruct Multi-lingual AI Voice Agents · struct.app | gone |
| 2023-01-01 | AI coding copilot engineered for performance · double.bot | still up |
| 2023-01-01 | YCSage AI Your self-generating, self-maintaining code knowledge base. · sage-ai.dev | still up |
| 2023-01-01 | AI RCM assistant that handles any insurance task on payer portals for… · pledge.health | still up |
| 2023-06-01 | Automate your chargebacks with AI agents · disputeninja.ai | still up |
| 2023-01-01 | AI Teammates for Data Tasks · tableflow.com | still up |
| 2023-01-01 | AI-powered data extraction engine · indexical.dev | gone |
| 2023-01-01 | YCDashdive Break down AI and cloud costs by feature and customer · dashdive.com | acquired |
| 2023-01-01 | YCFabius AI to improve Sales Calls · fabius.io | gone |
| 2023-06-01 | YCParea Test, evaluate & observe your LLM applications · parea.ai | still up |
| 2023-06-01 | YCChatter Dead simple LLM testing and iteration · chatter.anish.xyz | acquired |
| 2023-06-01 | YCCembla AI for legal & government · cembla.com | still up |
| 2023-06-01 | YCRepaint Build a website by chatting with AI · repaint.com | still up |
| 2023-01-01 | Resolve PR check failures instantly with AI · technician.dev | gone |
| 2023-01-01 | YCVaero AI for Human Writing · vaero.ai | still up |
| 2023-01-01 | YCLightski Transform Document Workflows with AI Agents · lightski.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.