Open source alternatives to Statsig

3 open source projects replace Statsig, ranked by how safe each is to depend on.

99 · Healthy

Feature flag service for gradual rollouts, targeting rules and kill switches, with SDKs for most languages.

AGPL-3.0Relicensed 2026★ 14kLast commit today

94 · Healthy

Product analytics suite with event tracking, session replay, feature flags and experiments.

Free core, paid extrasMIT★ 40kLast commit today

91 · Healthy

Feature flags and A/B testing that read experiment results straight from your own data warehouse.

Free core, paid extrasMIT★ 8.5kLast commit today

99 · Healthy

94 · Healthy

91 · Healthy

At a glance

Health and license are separate verdicts: a project can be well maintained and still not be open source.

Project	Health	License	Stars	Last commit
Unleash	99 · Healthy	Free, share hosted changesAGPL-3.0Relicensed 2026	14k	today
PostHog	94 · Healthy	Free core, paid extrasMIT	40k	today
GrowthBook	91 · Healthy	Free core, paid extrasMIT	8.5k	today

Statsig is a paid analytics product. See all open source analytics tools, ranked the same way.

Scores last refreshed from GitHub on 9 October 2026. How we score.