Compare / Flagsmith
Flaggr vs Flagsmith
Open-source and self-hostable, with a remote-config focus
Flagsmith is open-source and self-hostable. It centers on remote config and straightforward flag management with a solid hosted offering.
Side by side
| Area | Flaggr | Flagsmith | |
|---|---|---|---|
| Licensing | SDKs, CLI and Terraform provider are MIT; the platform's source code isn't public (self-hosting on request) | BSD-3 open core | them |
| Protocols | REST, Connect-RPC, gRPC-Web, OFREP, SSE | REST + SDK | flaggr |
| Evaluation engine | Go data plane, WASM edge, sub-ms evals | Python/Django core | flaggr |
| Observability | OTel + Prometheus + Grafana + toggle-impact analysis | Basic analytics, third-party hooks | flaggr |
| Progressive delivery | Canary pipelines with health gating, auto-rollback circuit breakers | Scheduled + percentage rollouts | flaggr |
| AI agent support | MCP server, local and hosted at flaggr.dev/mcp (Pro and Enterprise plans) | MCP server (hosted on its cloud; a container when self-hosted) | |
| Remote config UX | Targeting rules + variants | First-class remote config for non-engineers | them |
Where Flaggr leads
- Multi-protocol by design: REST, Connect-RPC, gRPC-Web, OFREP, and SSE streaming
- Built-in observability — OpenTelemetry traces, Prometheus metrics, Grafana dashboards, toggle-impact drift analysis, and circuit-breaker auto-rollback
- Closed-loop delivery — canary pipelines with health gating, multi-armed bandits, cohort targeting
- Live public playground — toggle demo flags on flaggr.dev and watch Flaggr's evaluation engine answer, no signup
Where Flagsmith fits better
Honest cases — we'd rather you pick the right tool.
- Remote config for non-technical teams is the primary use case
- You want the flag platform itself to be open source, with an established community around it
- Flagsmith strengths: open-source with a mature self-hosted offering
Common questions
How does Flaggr compare to Flagsmith on performance?
Flaggr's evaluation path runs on a Go data plane with snapshot caching — warm batch evaluations of thousands of flags land around 100ms. Flagsmith's Python core is adequate for most workloads but heavier under high-QPS evaluation.
What's the real difference between Flaggr and Flagsmith?
Licensing, then depth vs. breadth. Flagsmith is open-source and self-hostable; Flaggr's SDKs, CLI and Terraform provider are MIT-licensed, but the platform's source code isn't public and self-hosting is on request. Flagsmith optimizes for remote-config simplicity; Flaggr optimizes for engineering depth — multi-protocol eval, OTel observability, and canary automation.
Can I self-host Flaggr like Flagsmith?
On request. Flaggr's platform source isn't public, and there's no public container image or Helm chart: email hello@flaggr.dev to arrange self-hosting, or use the hosted service.
Try Flaggr in front of you
The playground on the home page evaluates its demo flags live with Flaggr's evaluation engine — or follow the quick start to evaluate your first flag.
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