You asked about B2B
273 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 |
|---|---|---|
| 2023-01-01 | YCTennr Fast, Transparent Patient Experiences · tennr.com | still up |
| 2023-01-01 | YCAlaan Modern finance platform for the Middle East · alaan.com | still up |
| 2023-01-01 | YCPylon The Agentic Support Platform purpose-built for B2B. · usepylon.com | still up |
| 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 | YCAvoca AI-powered Sales Agent for Service-Based Industries · avoca.ai | still up |
| 2023-01-01 | YCHadrius Automating Securities Compliance · hadrius.com | still up |
| 2023-06-01 | The World's First Multi-Agent System for Procurement · lio.ai | still up |
| 2023-06-01 | Intelligence that runs your operations. · happyrobot.ai | still up |
| 2023-01-01 | YCWarp AI-native Employee Management Platform for High-Growth Companies · warp.co | still up |
| 2023-06-01 | End-to-end content, learning, & deal intelligence for B2B sales teams · letter.ai | still up |
| 2023-06-01 | YCBland AI The enterprise platform for AI phone calls · bland.com | still up |
| 2023-06-01 | The operating system for inbound B2B revenue · hockeystack.com | still up |
| 2023-01-01 | YCOnshore AI for corporate tax · onshore.com | still up |
| 2023-06-01 | YCLangdock The all-in-one AI platform for companies. · langdock.com | still up |
| 2023-01-01 | YCLatent Medical language models to automate healthcare operations · latenthealth.com | still up |
| 2023-01-01 | Unified platform for secrets, certs, and privileged access management · infisical.com | still up |
| 2023-06-01 | AI patent drafting, prosecution, litigation and more for legal teams. · solveintelligence.com | still up |
| 2023-06-01 | YCSendblue iMessage for Sales · sendblue.com | still up |
| 2023-01-01 | YCSuger Salesforce for Cloud marketplaces on AWS, Azure, GCP · suger.io | still up |
| 2023-07-05 | b2bsaaskit.com | still up |
| 2023-01-01 | YCResend Email for developers · resend.com | still up |
| 2023-06-01 | YCVetRec AI Scribe for veterinarians. Saving time and improving patient care. · vetrec.io | still up |
| 2023-01-01 | YCPirros AI Platform for Architects and Engineers · pirros.com | still up |
| 2023-06-01 | B2B debt collection powered by AI agents · agentcollect.com | still up |
| 2023-01-01 | YCSalient AI Servicing for Auto Lenders · trysalient.com | still up |
| 2023-01-01 | YCVooma Automation platform for logistics · vooma.ai | still up |
| 2023-01-01 | AI-based full stack observability platform · middleware.io | still up |
| 2023-06-01 | YCHyLight Unmanned airships for inspecting our critical assets · hylight.aero | still up |
| 2023-01-01 | YCBujeti The Finance Control Centre for African Businesses · bujeti.com | still up |
| 2023-06-01 | YCTrayd A construction payroll and compliance platform built for specialty… · buildtrayd.com | still up |
| 2023-06-01 | AI-native operations for the banks · bretton.com | still up |
| 2023-01-01 | YCHona Personal Injury Legal Work - Automated · hona.com | still up |
| 2023-06-01 | AI Operating System for Private Market Investors · vectorshift.ai | still up |
| 2023-01-01 | Automate data-driven slide decks and documents with AI · rollstack.com | still up |
| 2023-06-01 | YCOutset AI-powered user interviews · outset.ai | still up |
| 2023-06-01 | Revenue Activation Platform · hyperbound.ai | still up |
| 2023-06-01 | YCGiga AI Support Agent for Enterprises. · giga.ai | still up |
| 2023-01-01 | YCTruewind AI-Powered Accounting · truewind.ai | still up |
| 2023-01-01 | YCEscape Offensive security for the teams that are 100x outnumbered · escape.tech | still up |
| 2023-01-01 | YCVitalize Transforming how health systems optimize labor · vitalize.care | still up |
| 2023-01-01 | YCWaza B2B payments platform for emerging markets. · waza.co | still up |
| 2023-06-01 | YCCercli AI powered HR and Recruitment for people teams · cercli.com | still up |
| 2023-01-01 | YCYuma AI The AI Support Agent for Ecommerce · yuma.ai | still up |
| 2023-01-01 | YCClueso Create beautiful videos & docs for any product or process in minutes · clueso.io | still up |
| 2023-01-01 | YCProglix B2B Marketplace for Steel Raw Materials · proglix.com | 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 | YCVellum vellum.ai | still up |
| 2023-01-01 | YCDepot Software delivery built for machine scale. · depot.dev | still up |
| 2023-06-01 | YCkapa.ai The fastest way to build AI assistants on technical content · kapa.ai | still up |
| 2023-06-01 | YCStrada AI agents that run insurance operations · getstrada.com | still up |
| 2023-01-01 | YCMetal Metal is an AI-driven operating system for fundraising · metal.so | still up |
| 2023-06-01 | YCElyos AI AI Customer Service Agents for trades and field services · elyos.ai | still up |
| 2023-01-01 | YCFlower Train AI on distributed data · flower.ai | still up |
| 2023-06-01 | YCReadily AI Compliance Platform for Healthcare Organizations · readily.co | still up |
| 2023-01-01 | YCVector Advertising for the new internet · vector.co | still up |
| 2023-01-01 | YCFloworks Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA · floworks.ai | still up |
| 2023-06-01 | YCBolto AI Powered All-In-One Payroll, HR + Recruiting · bolto.com | still up |
| 2023-06-01 | AI enabled marketplace matching trucks with jobs · fleetworks.ai | 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.