Free, open-source alternatives to LaunchDarkly
Feature flags for releases. 5 apps you can run yourself instead of LaunchDarkly, sorted by how well they replace it. Each one is open source, so your data stays with you.
FlagsmithBest match
Dashboard, API and SDKs for adding Feature Flags to your applications (alternative to LaunchDarkly).
Flipt
Feature flag solution with support for multiple data backends (alternative to LaunchDarkly).
GO Feature Flag
Simple, complete, and lightweight feature flag solution (alternative to LaunchDarkly).
Featbit
Enterprise-grade feature flag platform that you can self-host.
PostHog
Product analytics, session recording, feature flagging and a/b testing that you can self-host (alternative to Mixpanel, Amplitude, Heap, HotJar, Optimizely).
Side by side
| App | Stars | License | Activity | Runs on |
|---|---|---|---|---|
| Flagsmith | 6,591 | BSD-3-Clause | Docker, Kubernetes | |
| Flipt | 4,918 | GPL-3.0 | Docker, Kubernetes, Go | |
| GO Feature Flag | 2,120 | MIT | Go | |
| Featbit | 1,941 | MIT | Docker, Kubernetes | |
| PostHog | 40,247 | MIT | Python |
Why replace LaunchDarkly?
LaunchDarkly works, but your data lives in someone else's account, the price can change at any time, and features can disappear. An open-source app you run yourself is yours: you choose where it runs, who can see the data, and when to update.
Questions
What is the best free alternative to LaunchDarkly?
Flagsmith is the closest open-source replacement for LaunchDarkly in our list. Flipt and GO Feature Flag are worth a look too, depending on what you need.
Can I self-host an alternative to LaunchDarkly?
Yes. All 5 apps on this page are open source and can run on your own server, usually with Docker, or on a managed host that installs them for you.