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Home / Migrations / LaunchDarkly → Unleash

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.

LaunchDarkly data →Unleash data →

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.