Optimizely vs GrowthBook

Is GrowthBook a good alternative to Optimizely? Here’s what you need to know.

GrowthBook

Free

Open-source feature flagging and A/B testing platform.

GrowthBook is an open-source platform for feature flags and experimentation. Run A/B tests with Bayesian statistics, analyze results with your existing data warehouse, and manage feature rollouts. SDKs for all major languages.

Visit GrowthBook → View Full Listing

Why switch from Optimizely?

Indie pricing — no enterprise markup or per-seat fees
Direct maker support — talk to the person who built it
Transparent & open — many indie tools are open-source
No vendor lock-in — own your data, export anytime

Building an alternative to Optimizely?

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