A fast application config manager. Manage Application Behavior at Runtime.

Varse is a minimal tool for updating application behavior without redeploying. It has versatile capabilities, including feature flags, configuration management, and rollouts.

• Varse @ GitHub.

Standardizing Feature Flagging for Everyone.

OpenFeature is an open specification that provides a vendor-agnostic, community-driven API for feature flagging that works with your favorite feature flag management tool or in-house solution.

• OpenFeature @ GitHub.

Open Source Feature Flag & Remote Config Service.

Flagsmith is an open source, fully featured, Feature Flag and Remote Config service. Use our hosted API, deploy to your own private cloud, or run on-premise.

• Flagsmith @ GitHub.

Open-Source Feature Flag Management for Enterprises.

Unleash is an open source feature management solution. It improves the workflow of your development team and leads to quicker software delivery. Unleash increases efficiency and gives teams full control of how and when they enable new functionality for end users. Unleash lets teams ship code to production in smaller releases whenever they want.

Unleash @ GitHub.

FeatBit is a scalable, high-performance, and 100% open-source feature flags management platform that empowers all teams to deliver, control, experiment with and monetize their software.
Feature flag is a modern engineering technology that decouples code deployments from feature releases, giving you control over when and which end-users see which features.
FeatBit provides a holistic framework for managing feature flags that enables teams to use flags on a massive scale across various use cases.