Flagsmith

Alternative to Optimizely

Flagsmith makes it easy to create and manage features flags. Use our hosted API, deploy to your own private cloud, or run on-premises.

Posthog

Alternative to Optimizely

PostHog provides open source product analytics for your infrastructure, featuring hedgehogs.

GrowthBook

Alternative to Optimizely

GrowthBook is an open source platform that gives any company the power of a customized feature flagging and A/B testing system.