GrowthBookManage feature flags and run A/B experiments using your existing data.
100% free open source (MIT) self-hosted with unlimited seats, or free cloud tier for 3 members.
Developer tools
Flagsmith
Free softwareOpen sourceLocalBrowser
Control feature releases and remote configuration for groups of users.
What you can use it for
Control feature releases and remote configuration for groups of users.
- Available both as self-hosted open source and cloud free tier (50k requests/mo).
- Client and server SDKs for 15+ programming languages.
- User segmentation, percentage rollouts, and multivariate feature flags.
Workflow coverage and comparison notes
Toggle feature flags, define custom targeting rules, and control gradual releases across web and mobile using Flagsmith instead of DevCycle.
Before you switch
Self-hosted installation requires PostgreSQL and Redis. Advanced enterprise features like complex multi-stage approval workflows and streaming architecture require careful cluster tuning compared to LaunchDarkly’s fully managed global edge network.
Alternatives to these paid apps
Each comparison covers the workflow described above, rather than every paid feature.
More for the same workflow
See alternatives →GrowthBook