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Last Updated: 01-01-2023 12:00 AM (UTC)

Flipt

Backed by 4,800+ GitHub stars and trusted by teams replacing LaunchDarkly and Split with a self-hosted solution, Flipt v2 delivers the first truly Git-native feature management platform that treats feature flags as code stored in your own repositories. The architecture eliminates all database dependencies by building immutable in-memory snapshots from YAML flag definitions on every Git commit, delivering sub-millisecond evaluation latency with zero external runtime dependencies beyond the single Go binary. Multi-environment support maps directly to Git abstractions — separate repositories per environment, different directories within the same repository, or different branches — enabling teams to use their existing branching strategy, pull request workflows, and code review processes for flag changes. The evaluation engine supports boolean flags, multivariate string and numeric variants, segment-based targeting with constraint rules, percentage rollouts, and namespace isolation. Native SCM integration with GitHub, GitLab, BitBucket, Azure DevOps, and Gitea creates merge proposals directly from the UI with GPG-signed commits. Flipt implements the OpenFeature Remote Evaluation Protocol with official providers for Go, Node.js, Python, Java, C#, Ruby, and Web SDKs, enabling vendor-agnostic flag evaluation across all services. The gRPC API with REST HTTP gateway exposes flag management, evaluation, and analytics endpoints. Offline mode continues serving flags when the source repository is temporarily unavailable. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Fair Core License (server) / MIT (client SDKs).

Flipt
Flipt
Flipt
Flipt
Flipt

Benefits

  • Zero Database Dependencies
  • Git-native storage builds immutable in-memory snapshots from YAML files on each commit, eliminating PostgreSQL, MySQL, or SQLite setup while delivering sub-millisecond evaluation latency.
  • Flags as Code in Git
  • Feature flags stored as YAML in your repositories use existing branching strategies, pull request reviews, blame history, and CI/CD pipelines for auditable, version-controlled flag management.
  • OpenFeature OFREP Compliance
  • Implements the OpenFeature Remote Evaluation Protocol with official providers for Go, Node.js, Python, Java, C#, Ruby, and Web enabling vendor-agnostic flag evaluation without lock-in.
  • Single Binary Deployment
  • Ships as one self-contained Go binary with a built-in web UI, gRPC API, REST gateway, and Git client, requiring no containers, sidecars, or external services to operate.

Features

  • Git SCM Integration
  • Native integration with GitHub, GitLab, BitBucket, Azure DevOps, and Gitea creates merge proposals from the UI with GPG-signed commits for auditable flag changes.
  • Multi-Environment Branching
  • Maps environments to Git repositories, directories, or branches enabling isolated staging, production, and development flag states with Git-native promotion workflows.
  • Segment-Based Targeting
  • Constraint rules evaluate entity attributes against segments with boolean, multivariate, and percentage rollout distributions for granular feature release control.
  • Offline Evaluation Mode
  • Continues serving flags from the last known snapshot when the source Git repository is temporarily unavailable, ensuring zero-downtime flag evaluation during network issues.
  • Built-In Web Console
  • Clean management UI for creating flags, segments, rules, and rollouts with real-time evaluation testing, audit logs, and environment switching without command-line access.