9 Best Free Product Analytics Software for SaaS Startups in 2026

To find the best free product analytics software for SaaS startups in 2026, I worked through G2 reviews and evaluated 20 tools to finalize: Contentsquare, FullStory, Heap by Contentsquare, LogRocket, Mixpanel, Pendo, PostHog, Statsig, and Userpilot .