GrowthBook

Simple to use, powerful, open source, and easily adaptable. Strong founding team who is also very helpful with onboarding and integration help.

I love Growthbook! I use it mainly for the experiment tracking/reporting features and it's been really great so far. I've had zero issues with it even though it's a very early-stage product. They take a Bayesian approach to the stats side of the platform, which was a requirement for us. It's also very transparent about how the statistics work & it's easy to troubleshoot because the queries they run to fetch & transform data are readily available. A few other highlights: - Incredibly easy to self-host, - There's a friendly, responsive community on Slack, - The reports it generates are both pretty and comprehensive (both of which are critical for our PMs)

Great feature toggling and a/b testing tools