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Flagsmith

★ 6k

Feature flag and remote config service with segments, A/B testing, and a self-hostable API plus dashboard

Flagsmith does the job of LaunchDarkly, self-hosted. It is BSD-3-Clause-licensed, so you can do essentially what you like with it, and it installs in about one command. LaunchDarkly bills $45-200+ for it. 6k stars on GitHub.

Open-source replacement for LaunchDarkly.

Licence
BSD-3-Clause
Self-hosting
Easy
The paid one costs
$45-200+
GitHub stars
6k
view the code →official site →

Is it actually a replacement?

We have written a verdict on what it replaces — what you lose, and why people still pay:

How Flagsmith runs

Where it runs

Flagsmith runs on your server.

What setup takes

not verified by us yet — check the repo README.

Flagsmith questions

Is Flagsmith open source?

Yes — it is released under BSD-3-Clause.

Can Flagsmith replace LaunchDarkly?

Our verdict on LaunchDarkly is YES. OpenCode (192k stars), OpenHands (83k stars), Cline (65k stars) are mature open-source replacements for LaunchDarkly — self-host in one command and stop paying $100/mo.

Can I self-host Flagsmith?

Yes — we rate it easy to self-host, and it runs on your server.

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