startup library
Find a source pattern worth forking.
Search companies, vertical niches, markets, and generated fork ideas. Use this as the working catalog once the landing page gets too small.
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Amplitude
Public company
Digital analytics platform for product usage, funnels, experiments, cohorts, session replay, and retention insights.
source signal
Public company · YC alumni
best buyer
Product-led teams in a niche market that need answers from usage data without hiring an analyst.
build path
Replace the generic analytics workspace with one vertical dashboard that knows the key activation, retention, and revenue events.
ranked fork ideas
Pick the wedge with the clearest buyer pain.
1 ideas
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