Clockify

Clockify is the free time tracking platform built by CAKE.com, a bootstrapped Serbian software company that disrupted the time tracking market in 2017 with a simple promise: unlimited users, unlimited projects, unlimited time tracking — free forever. Within three years of launch it reached 5 million users by being the only serious enterprise-grade tracker with a genuinely unlimited free plan. Revenue comes from paid features like GPS tracking for field teams, time lock (prevent editing past entries), QuickBooks and Xero integrations, project templates, and advanced reports — the free tier is a massive customer acquisition machine. CAKE.com applies the same freemium-with-paid-upgrades model across its other products: Pumble (a Slack alternative) and Plaky (a Monday.com alternative), building a bootstrapped productivity suite that competes with VC-backed giants purely through aggressive pricing strategy.