diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1528,6 +1528,7 @@ This list is the result of Pull Requests, reviews, ideas and work done by 1100+
    * [Uptrace](https://uptrace.dev) - Distributed Tracing Tool that helps developers pinpoint failures and find performance bottlenecks. Has a free plan, offers a free Personal subscription for open source projects, and has an open source version.
    * [Microsoft Clarity](https://clarity.microsoft.com/) - Clarity is a free, easy-to-use tool that captures how real people actually use your site.
    * [Beampipe.io](https://beampipe.io) - Beampipe is simple, privacy-focussed web analytics. free for up to 5 domains & 10k monthly page views.
+   * [GrowthBook](https://growthbook.io) - Open source feature flag and A/B testing provider with built-in Bayesian statistical analysis engine. Free for up to 3 users, unlimited feature flags and experiments.
 
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