PostHog
Open sourceSelf-hostBest for: Teams who want Amplitude-grade analytics plus session replay + feature flags + A/B testing
PostHog is the all-in-one alternative — events, funnels, retention, cohorts, session replay, feature flags, A/B testing, surveys. Open source with a generous free cloud tier and self-host option.
Free 1M events/mo, then usage-based
Pros
- ✓Bundled feature set genuinely impressive
- ✓Free tier extremely generous (1M events/mo)
- ✓Open source — self-host for free
Cons
- ×UI denser than Amplitude
- ×Self-hosting is real infra work
- ×Cohort analysis depth slightly less than Amplitude