You asked about Team Collaboration
224 people built something like it. 42 are gone.
That is 23% of the ones whose fate we could settle, against 23% across the whole register. 41 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2012-06-01 | Secure Collaboration for Technical Teams · mattermost.com | still up |
| 2019-01-01 | YCTermius Termius is an SSH client with team collaboration features · termius.com | still up |
| 2016-01-01 | YCMio Mio powers seamless communication between workplace chat apps. · m.io | still up |
| 2021-06-01 | YCDailybot Make all team work visible — people and AI agents · dailybot.com | still up |
| 2019-06-01 | YCTandem Tandem is a virtual office for remote and distributed teams. · tandem.chat | gone |
| 2019-06-01 | YCTaskade One prompt. One app. One living workspace for teams. · taskade.com | still up |
| 2016-06-01 | YCUbiq Screen-sharing for enterprise conference rooms · goubiq.com | gone |
| 2019-01-01 | YCCocoon Bring your most important groups closer together · cocoon.com | acquired |
| 2020-06-01 | YCDuckly Video chat with real-time collaboration. · duckly.com | gone |
| 2021-01-01 | A faster and more collaborative alternative to Jira for remote teams · kitemaker.co | acquired |
| 2015-01-01 | YCWorkLife WorkLife is a SaaS application that helps teams have more effective… · worklife.com | acquired |
| 2023-06-01 | YCAffinity A compliance training platform built for regulated industries. · itsaffinity.com | still up |
| 2019-01-01 | YCHerald A collaborative repository for user feedback. · heraldhq.com | gone |
| 2013-01-01 | Collaborative Screen Sharing — you each get your own mouse, and… · screenhero.com | acquired |
| 2025-01-01 | YCOlive Build internal tools with AI · fromolive.com | still up |
| 2024-01-01 | Your team’s AI powered communication tool · atpatchwork.com | gone |
| 2023-01-01 | YCLinkGrep AI browser copilot for teams · linkgrep.com | still up |
| 2024-01-01 | Gives non-technical team members agents that work right out of the box · usesolari.ai | still up |
| 2014-01-01 | Virtual activities for remote teams · merrymint.co | gone |
| 2019-01-01 | YCBlitzIQ Note taking workspace for B2B sales teams · blitziq.com | gone |
| 2019-01-01 | YCDeel The all-in-one HR and payroll platform for global teams · deel.com | still up |
| 2012-01-01 | YCGusto Provides growing businesses with everything to take care of their team · gusto.com | still up |
| 2016-01-01 | AI-First Creative Partner for Enterprise Teams · superside.com | still up |
| 2019-06-01 | Building the safety net of the future · pairteam.com | still up |
| 2018-01-01 | 'Figma/Canva for scientists’ · biorender.com | still up |
| 2011-06-01 | YCApollo Apollo helps engineering teams accelerate delivery · apollographql.com | still up |
| 2017-01-01 | YCUpKeep Mobile-first software for maintenance teams. · upkeep.com | acquired |
| 2019-06-01 | YCCoLab Human and AI design review for hardware · colabsoftware.com | still up |
| 2018-01-01 | Health insurance for remote teams · safetywing.com | still up |
| 2021-01-01 | YCAbacum The AI-native FP&A platform that helps Finance teams drive business… · abacum.ai | still up |
| 2018-06-01 | The all-in-one business phone for teams. · quo.com | still up |
| 2015-01-01 | YCPlatzi Turning company knowledge into expert teams · platzi.com | still up |
| 2015-01-01 | YCBonfire Bonfire is reimagining RFPs & bidding for gov procurement teams · gobonfire.com | acquired |
| 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 |
| 2020-01-01 | YCPulley Pulley helps founders and finance teams manage their equity and cap… · pulley.com | still up |
| 2018-01-01 | YCReplit Collaborative in-browser IDE · replit.com | still up |
| 2013-06-01 | Legal Operations for corporate legal teams. · simplelegal.com | acquired |
| 2014-01-01 | YCAmbition Coaching and gamification software for sales teams. · ambition.com | still up |
| 2015-06-01 | YCGigster Build and manage distributed teams · gigster.com | acquired |
| 2023-06-01 | AI patent drafting, prosecution, litigation and more for legal teams. · solveintelligence.com | still up |
| 2019-01-01 | YCEmi Labs Helping great teams hire better frontline workers, faster. · emilabs.ai | still up |
| 2013-06-01 | Apptimize lets mobile teams innovate faster to create an amazing user… · apptimize.com | acquired |
| 2012-01-01 | YCSwiftype Smart search for the modern team. · swiftype.com | acquired |
| 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 |
| 2015-06-01 | YCEden Workplace software for people-centric companies. · edenworkplace.com | acquired |
| 2010-06-01 | YCAeroFS Secure Enterprise Collaboration. · aerofs.com | acquired |
| 2018-01-01 | YCSlite The self-maintaining knowledge base · slite.com | still up |
| 2014-06-01 | YCImpraise Enable managers to create an effective work environment for their team · impraise.com | acquired |
| 2018-01-01 | YCYouTeam We make it easy for startups to hire engineers. · youteam.io | acquired |
| 2020-01-01 | Data observability for modern data teams · metaplane.dev | acquired |
| 2020-01-01 | YCKinter A new kind of power for finance teams · kinter.ai | still up |
| 2020-01-01 | YCHumanly We empower the world’s hiring teams to grow engaged, high-performing… · humanly.io | still up |
| 2023-01-01 | YCEscape Offensive security for the teams that are 100x outnumbered · escape.tech | still up |
| 2023-06-01 | YCCercli AI powered HR and Recruitment for people teams · cercli.com | still up |
| 2020-01-01 | YCRaycast Speed up non-coding tasks for engineering teams · raycast.com | still up |
| 2020-01-01 | A talent acquisition software built for data-driven recruiting teams. · hiresweet.com | still up |
| 2016-06-01 | Just-in-time training and communication for frontline healthcare teams · elemenohealth.com | still up |
| 2019-01-01 | YCDoppler Secure secrets. Prevent breaches. Keep teams moving. · doppler.com | still up |
How this compares
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
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.