You asked about B2B
399 people built something like it. 26 are gone.
That is 7% of the ones whose fate we could settle, against 23% across the whole register. 13 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2024-01-01 | YCLegora The AI workspace for lawyers · legora.com | still up |
| 2024-06-01 | YCConveo Growth through always‑on consumer understanding · conveo.ai | still up |
| 2024-01-01 | YCModel ML AI Workspace for Financial Services. · modelml.com | still up |
| 2024-01-01 | YCArtisan The GTM orchestration platform. Ava, Aaron and Aria replace your stack · artisan.co | still up |
| 2024-01-01 | Supercharge Your Contact Center Operations with AI Phone Agents · retellai.com | still up |
| 2024-06-01 | AI Agents for collections · domu.ai | still up |
| 2024-06-01 | YCTaxGPT AI tax assistant for professionals and businesses · taxgpt.com | still up |
| 2024-01-01 | YCGumloop The multiplayer AI agent builder. Let anyone build, IT controls access · gumloop.com | still up |
| 2024-01-01 | AI Workforce for the Insurance Industry · furtherai.com | still up |
| 2024-01-01 | YCPointOne AI Time Platform for Law Firms · pointone.com | still up |
| 2024-06-01 | Apple Care-like warranty program for every retailer · surebright.com | 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 | Accelerate Medication Access with AI · runtrellis.com | still up |
| 2024-09-01 | Real-time B2B data via simple APIs · crustdata.com | still up |
| 2024-01-01 | YCReducto The complete agentic document platform · reducto.ai | still up |
| 2024-01-01 | YCAlex Alex is the AI recruiter for hiring great people. · alex.com | still up |
| 2024-06-01 | YCautarc autarc is the agentic OS for energy installers. · autarc.energy | still up |
| 2024-01-01 | YCSalvy Mobile carrier for businesses in Brazil · salvy.com.br | still up |
| 2024-06-01 | Medical Record Retrieval with Zero Human Error · codeshealth.com | still up |
| 2024-01-01 | YCGarage Marketplace for America's most essential assets · shopgarage.com | still up |
| 2024-01-01 | Autonomous offensive and defensive cybersecurity platform · codeant.ai | still up |
| 2024-01-01 | YCRespan Self-driving observability, evals, and gateway for AI agents · respan.ai | still up |
| 2024-06-01 | YCPulse Production-grade unstructured document extraction · runpulse.com | still up |
| 2024-06-01 | YCTandem AI-native office leasing broker · tandemspace.com | 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 |
| 2024-01-01 | AI Inference Platform for Drug Discovery · tamarind.bio | still up |
| 2024-06-01 | YCArva AI AI Agents to scale AML, KYB and KYC operations · arva.ai | still up |
| 2024-01-01 | YCOnyx Open Source AI Chat · onyx.app | acquired |
| 2024-01-01 | YCToma AI for Underserved Industries · toma.com | still up |
| 2024-06-01 | AI powered ERP for Construction · merlinai.co | still up |
| 2024-01-01 | YCMiden Card issuer processor and banking stack for businesses in Sub-… · miden.co | still up |
| 2024-06-01 | YCSaturn Compliance and back office workflows for Wealth Managers. · saturnos.com | still up |
| 2024-01-01 | YCTriply Operating system for travel businesses in Africa with embedded finance · business.triply.co | still up |
| 2024-06-01 | Automate security and privacy reviews · clearly-ai.com | still up |
| 2024-09-01 | YCtelli AI phone agents that convert · telli.com | still up |
| 2024-06-01 | YCOway Turning America’s supply chain inefficiency into infrastructure. · shipoway.com | still up |
| 2024-09-01 | YCRevyl The Mobile Development Platform · revyl.com | still up |
| 2024-06-01 | Helping furniture companies create product visuals with AI · presti.ai | still up |
| 2024-09-01 | YCCekura Voice AI and Chat AI agents: Testing and Observability · cekura.ai | still up |
| 2024-06-01 | YCCentral Payroll, benefits, state compliance & other bullsh*t for startups · centralhq.com | acquired |
| 2024-01-01 | YCInfinity Business banking for cross-border SMBs & Startups · infinityapp.in | still up |
| 2024-06-01 | YCEntangl Find & resolve issues in data center engineering & operations using AI · entangl.com | still up |
| 2024-06-01 | YCSepal AI Data Development for Advanced AI · sepalai.com | acquired |
| 2024-09-01 | YCLaminar Enterprise systems delivery without the turbulence. · laminar.com | still up |
| 2024-09-01 | The legal back-office for European founders - the incorporation API… · beglaubigt.de | still up |
| 2024-01-01 | YCUbicloud Open source alternative to AWS · ubicloud.com | still up |
| 2024-06-01 | YCNo Logo Turn ideas into physical products · nologo.com | still up |
| 2024-01-01 | YCConduit AI Agents for Hospitality · conduit.ai | still up |
| 2024-01-01 | YCOffDeal AI-native investment bank for small businesses · offdeal.io | still up |
| 2024-01-01 | YCCarma The AI Operating System For Modern Fleets. · joincarma.com | still up |
| 2024-01-01 | YCMomentic The agentic quality platform for web and mobile · momentic.ai | still up |
| 2024-01-01 | YCDriver Context for Codebases · driver.ai | still up |
| 2024-01-01 | ProSights is a data / AI transformation partner to PE-backed portcos. · prosights.co | still up |
| 2024-01-01 | YCDraftaid Go from 3D models to CAD drawings using AI · draftaid.io | still up |
| 2024-06-01 | YCIntryc Intryc uses AI to automate quality assurance for customer support · intryc.com | still up |
| 2024-01-01 | YCRyse The secondary market for real estate leases · rysemarket.com | still up |
| 2024-01-01 | YCsync. AI lipsync tool for video content creators · sync.so | still up |
| 2024-01-01 | YCZaymo Interactive email builder for ecommerce brands · zaymo.com | still up |
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.