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LaunchDarkly Unleash

medium

Unleash is the open-source LaunchDarkly. Free to self-host, same feature flag concepts, much cheaper at scale.

Estimated: 4-8h · 5 steps
Progress0%
Step 1: Deploy Unleash

Docker Compose or Unleash Cloud.

docker run -d --name unleash -p 4242:4242 unleashorg/unleash-server:latest
Step 2: Recreate flags

Manually recreate your LaunchDarkly feature flags in Unleash. Match flag keys exactly to minimize code changes.

Step 3: Install Unleash SDK
npm uninstall launchdarkly-node-client-sdk && npm install unleash-client
Step 4: Update flag evaluation

LaunchDarkly: client.variation('flag', context, false). Unleash: client.isEnabled('flag', context, false). Map user attributes to Unleash context.

Step 5: Test rollout

Verify gradual rollout, user targeting, and kill switches work correctly.

All feature flags evaluate correctly, no regressions

What this migration involves

Moving from LaunchDarkly to Unleash is rated medium and takes about 4-8h on a typical project. The guide breaks it into 5 steps, 2 of which ship with runnable commands and 1 with a verification check. On pricing, LaunchDarkly is paid and Unleash is open-source with a free plan to test the move.

FAQ

How long does migrating from LaunchDarkly to Unleash take?

Around 4-8h for a typical project — 5 steps, difficulty rated medium, 2 of them with copy-paste commands.

Is moving from LaunchDarkly to Unleash reversible?

No reverse guide is tracked yet, so treat this as a one-way move and keep a full export of your LaunchDarkly data before you start.

What does Unleash cost compared to LaunchDarkly?

LaunchDarkly: paid from $10/mo. Unleash: open-source from $0/mo, free plan available.