GrowthBook's open source feature flagging and experimentation are built by developers for developers.
We built GrowthBook based on years of building and using similar platforms. The GrowthBook feature flagging and A/B testing platform is modular so it can you it the way you want to. We architected the system with great care and insist on the highest standards so you don't have to worry about your infrastructure causing performance problems.
GrowthBook makes it easy to deploy code, and monitor the release with real time usage logs.
Developing A/B tests can be a pain to test and debug all the feature rules, variations and interactions. With our developer tool, you can easily see what features are active, how the rules were evaluated, and even switch variations of A/B tests.
GrowthBook was designed from the ground up to work with modern technology stacks, and works great with React, SSR, SPAs, NextJS, Static Site Generators, and more.