Statsig
Feature flags + experiments from Facebook alumni
★ 4.6
Feature flags and experimentation platform from ex-Facebook engineers. Statistical significance built-in. Generous free tier with 1M events.
Features
✓ Feature gates (flags)
✓ A/B experiments
✓ Dynamic configs
✓ Auto-analyze experiments
✓ Holdouts
✓ Layers (mutual exclusion)
✓ Pulse (metrics)
✓ Warehouse native mode
Pros
- + Extremely generous free tier
- + Built by ex-Facebook team
- + Auto statistical analysis
- + Product analytics included
- + Fast evaluation
Cons
- − Newer platform
- − Less third-party integrations
- − Learning curve for experiments
- − UI can be overwhelming