Startups.RIP
Rebuild 1,738+ dead YC startups with AI
Startups.RIP launched on April 9, 2026 with 205 votes, #138 of 21,248 launches that month and more than 99% of that year's launches.
What it does
Startups often fail because of timing, not ideas. Startups.RIP is a wiki of 1,700+ YC startups that shut down or got acquired. Our AI research agent writes a detailed post-mortem (what they built, why they failed, what's changed since) and a rebuild playbook with implementation-ready technical specs you can drop straight into your AI coding agent. Every failed startup is a validated market with unfinished business. Shortcut the idea maze. Start with what almost worked.
Research reports, rebuild plans, and technical specs for 1,700+ YC startups. Navigate the idea maze with lessons from the companies that came before you.
Loopt, based in Silicon-Valley and backed by leading venture capital firms Sequoia Capital and New Enterprise Associates, has created an interoperable social-mapping service that allows individuals to use their location to discover the real world around them – enabling them to find and enjoy the people, places, and events that mean the most right here and now using their mobile phones. With Loopt, individuals will always know who’s around, what to do, or where to go Auctomatic, a Y Combinator company, offers an auction and marketplace management system for all of those individual sellers on such sites as Ebay, Amazon, Overstock and others. The application lets you list your items as well as…from startups.rip
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The Startup Chat - 40: Your startup is surviving, but not thriving. quit or keep pushing?2015 · thestartupchat.com · ▲73This is not a binary “yes” or “no” answer.
Foundertrace – chain of YC startups founded by its employeesJan 2026 · foundertrace.com · ▲39Inspired by PG’s tweet about a chain of 4 YC startups where the founder worked at a YC startup, I vibe coded and generated these genealogy chains for all ~6k YC startups. And to make these trees easily accessible I packaged them into a hosted webapp. Few noteworthy YC startups which have had huge impact in YC ecosystem Airbnb - 83 YC startups spawned Stripe - 67 YC startups spawned Dropbox - 50 YC startups spawned Justin.tv/Twitch - 47 YC startups spawned More recently founded YC startups which have spawned a lot more YC startups Rappi - 21 YC startups spawned Brex - 20 YC startups…
My 4th failed startup (2nd due to user acquisition costs)2012 · condoly.com · ▲11Hello HN, Later today I'll be shutting down the servers and moving on. This is my 5th startup and the 4th failure. The reason is very simple: I understimated the cost of user acquisition. This is the second time this happened. The dozens of users actually love the software and are using it on a daily basis. I'm ruthless when it comes to coding and money. So, if you are building a startup: do not ignore how much money you will have to spend to get a user. If you are not able to find that number, something could be wrong with your model. Maybe someone smarter than me could write something…
StartupDeathJul 2026 · startupdeath.onrender.com · ▲26 brutal AI agents kill your startup idea in 30 seconds
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