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Samenvatting
Here are 10 GitHub repos that quietly print money while you sleep. 1. Cal. com Open-source Calendly. Fork it, white-label it, sell to dentists and lawyers for $200/month. The founders hit $5M ARR in 3 years doing exactly this. Repo → https://t.co/haz8ihRsHm 2. Plausible Analytics Privacy-first Goo