Startup Lessons Tools

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.

Lack of momentum kills startups. I've done YC 3 times and built Pre to productize the focus and accountability of batch office hours. Pre's AI agent knows exactly how you're really doing from your connected data. Set your North Star, commit to weekly goals that move the needle, and every week it sends a no-spin progress report to whoever you don't want to disappoint. No editing. No excuses.

What does the average YC company actually look like? I scraped 793 startups and 1,625 founder bios from the last 5 batches to find out. 27 interactive charts covering: which industries are surging, which are dying, what founders have in common, how partners pick companies, hidden themes in descriptions, and the exact statistical profile of a "default" YC startup. Some surprises: YC funds direct competitors in the same batch. And every partner has a type. Free. No login

Y-Bombinator is an agent built with 100x Bot by experienced founders. We built YB to help newer YC applicants to find confidence in their merits and internally check where their strengths and weaknesse lie.

Problem: the main reason startups fail is a lack of market need. 42% of startups built solutions that didn't solve real problems. Solution: we manually find people with unresolved problems they are willing to pay to solve.

Discover what makes your favorite apps so special - from their origin story to their tech stacks and the tools their teams rely on daily. Inspiring stories, told by the makers & founders themselves.