Flagsmith

Flagsmith is an open-source feature flag and remote configuration service that helps development teams control software releases. It provides an all-in-one toolkit for managing feature toggles across web, mobile, and server-side applications. Simply wrap a section of code with a flag, and then use the Flagsmith dashboard to manage that feature's rollout.

Key capabilities include:

• Granular Targeting: Manage features for specific development environments, individual users, user segments, or a percentage of your user base. This makes implementing practices like canary deployments straightforward.
• A/B and Multivariate Testing: Use percentage splits across multiple variations to run precise experiments and integrate with your existing analytics platforms to measure impact.
• Remote Config: Modify your application in real-time without a new deployment or app store approval. Change values, like the color of a button or available payment options, on the fly.
• Flexible Deployment: As an open-source tool, you can host Flagsmith on-premise or in a private cloud, ensuring your data remains secure and under your control.