You asked about Team Collaboration
64 people built something like it. 5 are gone.
That is 8% of the ones whose fate we could settle, against 23% across the whole register. 3 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCDailybot Make all team work visible — people and AI agents · dailybot.com | still up |
| 2023-01-01 | YCLinkGrep AI browser copilot for teams · linkgrep.com | still up |
| 2024-01-01 | Your team’s AI powered communication tool · atpatchwork.com | gone |
| 2025-01-01 | YCOlive Build internal tools with AI · fromolive.com | still up |
| 2024-01-01 | Gives non-technical team members agents that work right out of the box · usesolari.ai | still up |
| 2016-01-01 | AI-First Creative Partner for Enterprise Teams · superside.com | still up |
| 2022-10-03 | exactbuyer.com | gone |
| 2022-04-04 | hirequotient.com | still up |
| 2019-06-01 | YCCoLab Human and AI design review for hardware · colabsoftware.com | still up |
| 2023-03-21 | headshotpro.com | still up |
| 2021-01-01 | YCAbacum The AI-native FP&A platform that helps Finance teams drive business… · abacum.ai | still up |
| 2022-02-01 | ango.ai | still up |
| 2022-07-12 | pixieapp.co | still up |
| 2022-01-25 | bit.ly | moved |
| 2022-04-07 | traq.ai | still up |
| 2019-01-01 | YCGoLinks Intuitive, easy-to-remember short links - powered by AI. · golinks.io | still up |
| 2023-06-01 | End-to-end content, learning, & deal intelligence for B2B sales teams · letter.ai | still up |
| 2023-06-01 | AI patent drafting, prosecution, litigation and more for legal teams. · solveintelligence.com | still up |
| 2021-06-01 | YCSully.ai Autonomous team of AI agents that runs the entire hospital operations · sully.ai | still up |
| 2021-01-01 | YCHumaans AI-Powered HRIS for high performing teams · humaans.io | still up |
| 2023-05-23 | unskript.com | unverified |
| 2023-06-01 | YCCercli AI powered HR and Recruitment for people teams · cercli.com | still up |
| 2020-01-01 | YCNextmv A DecisionOps platform that accelerates optimization AI teams · nextmv.io | acquired |
| 2021-01-01 | YCSpokn AI-powered video platform for Internal Comms and HR teams · getspokn.com | still up |
| 2023-01-01 | YCInkeep Build AI Agent teammates and automations in code or no-code · inkeep.com | still up |
| 2025-09-01 | YCLexi AI Operating System for Legal Teams · getlexi.io | still up |
| 2019-01-01 | YCFlockjay AI-driven learning, content, and coaching for sales teams · flockjay.com | still up |
| 2025-06-01 | YCFinto AI accounting for enterprise finance teams · gofinto.com | still up |
| 2020-06-01 | YCBrevy Empower your customer service team through AI & automation. · brevy.com | acquired |
| 2023-01-01 | YCFlexDesk AI Agents for corporate real estate teams · flexdesk.com | still up |
| 2021-01-01 | YCRoutine AI-native all-in-one workspace for startups · routine.co | still up |
| 2023-06-01 | YCNectar Manage energy cost & usage with AI for facility & sustainability teams · nectarclimate.com | still up |
| 2023-06-01 | YCVenta AI The compliant AI colleague for sales teams in Europe · getventa.ai | still up |
| 2025-01-01 | AI agents for CX teams, starting with training and QA. · solidroad.com | still up |
| 2023-01-01 | YCUnify AI teammates for everyone else 🤖 · unify.ai | still up |
| 2025-01-01 | Voice AI teams for medicare agencies. · carecycle.ai | still up |
| 2022-06-01 | YCAvina GTM signals engine for sales teams. Automate warm outbound with AI. · avina.io | still up |
| 2022-01-01 | YCSprites The AI performance marketing agent for entrepreneurs and growth teams · sprites.ai | still up |
| 2024-01-01 | Helps teams work effectively with AI coding agents. · centauri-ai.tech | still up |
| 2025-01-01 | An AI teammate that automatically updates your customer-facing docs · promptless.ai | still up |
| 2025-09-01 | YCLunaBill AI Voice callers for healthcare billing teams · lunabill.com | still up |
| 2023-01-01 | YCFrigade AI-powered product assistance for modern software teams · frigade.com | still up |
| 2025-06-01 | AI coworkers for fraud and compliance teams. · getsocratix.ai | still up |
| 2025-09-01 | YCCodyco The AI Reservation Team for Hotel Groups · codyco.ai | still up |
| 2022-01-01 | YCFinnt AI Agents for CFO and Finance teams · finnt.com | gone |
| 2025-09-01 | YCOpenroll The AI workforce for People and Finance teams · openroll.com | still up |
| 2023-01-01 | AI-native operating system for analytics teams · turntable.so | gone |
| 2023-06-01 | YCPropRise The AI platform for CRE investment teams · proprise.ai | still up |
| 2023-06-01 | AI back office for food product quality teams · cognitioiq.com | still up |
| 2026-01-01 | YCFullSeam AI agents for corporate accounting teams · fullseam.com | still up |
| 2025-09-01 | YCScott AI The planning layer for teams that build with coding agents · tryscott.ai | still up |
| 2024-01-01 | YCLumetric The AI Analyst For Deal Teams · lumetric.ai | acquired |
| 2026-09-01 | AI that works for in-house legal teams · trylightfield.ai | still up |
| 2025-01-01 | YC10x AI Sales Teams for Dental Practices · 10xdental.com | still up |
| 2025-09-01 | YCThe Hog Real-time web intelligence API for AI agents and GTM teams · thehog.ai | still up |
| 2025-09-01 | YCNexus We help non-technical teams build AI agents without engineers · agent.nexus | still up |
| 2021-06-01 | Sales AI that helps revenue teams move faster and close more deals. · firstquadrant.ai | gone |
| 2024-01-01 | AI system design tools for dev teams · agenticlabs.com | still up |
| 2024-06-01 | YCRescript AI for Legal & Public Policy Teams · rescript.ai | still up |
| 2023-01-01 | AI Teammates for Data Tasks · tableflow.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.