Unleash vs LaunchDarkly
Self-host swap-in for LaunchDarkly. · Self-host LaunchDarkly · Unleash on os-alt
Unleash is one of the open-source self-host replacements for LaunchDarkly — license Apache-2.0, 20min docker-compose (Node + Postgres) to stand up, and $10/mo vps for the app; sdks are free. Compare against LaunchDarkly's Foundation $10/seat/mo; Developer $25/seat/mo; Pro custom (typically $0.10-0.30 per MAU) below.
| Unleashopen-source | LaunchDarklypaid SaaS | |
|---|---|---|
| Category | Feature flags / progressive delivery | Feature flags / progressive delivery |
| License / pricing | Apache-2.0 | Foundation $10/seat/mo; Developer $25/seat/mo; Pro custom (typically $0.10-0.30 per MAU) |
| Starting price | $0 self-host | $10/user/mo |
| GitHub | Unleash/unleash | closed source |
| Setup time | 20min docker-compose (Node + Postgres) | SaaS — sign up + bill |
| Monthly cost | $10/mo VPS for the app; SDKs are free. | from $10/user/mo (Foundation $10/seat/mo; Developer $25/seat/mo; Pro custom (typically $0.10-0.30 per MAU)) |
Switching from LaunchDarkly to Unleash
Pull `unleashorg/unleash-server` and `postgres:16`. Unleash has an Admin API for bulk-creating flags — write a one-shot script that pulls flags from LaunchDarkly's REST API and POSTs to Unleash. SDK migration: swap `LDClient` for `UnleashClient` in your app code; the API surface is similar. Edge evaluation via Unleash Edge (Rust binary) deployed near your apps for low-latency reads.
- Good fit for
- Engineering teams that want a battle-tested feature-flag platform with a clean self-host story.
- Weak at
- A/B testing depth is shallower than LaunchDarkly Experimentation; pair with PostHog or GrowthBook if experimentation is core.
- License note
- Core OSS is Apache-2.0; some Enterprise features (advanced segments, change requests) are gated.
Other open-source self-host alternatives to LaunchDarkly
In a terminal? npx os-alt launchdarkly prints LaunchDarkly's self-host options —
how the CLI works →
FAQ
Is Unleash a free alternative to LaunchDarkly?
Yes — Unleash is open source under Apache-2.0. Self-host cost: $10/mo VPS for the app; SDKs are free.. LaunchDarkly starts at $10/user/mo (Foundation $10/seat/mo; Developer $25/seat/mo; Pro custom (typically $0.10-0.30 per MAU)).
How long does Unleash take to set up vs LaunchDarkly?
Self-hosting Unleash: 20min docker-compose (Node + Postgres). LaunchDarkly is a hosted SaaS — sign up and you're in.
What is Unleash good at, and what is it weak at?
Good fit for: Engineering teams that want a battle-tested feature-flag platform with a clean self-host story.. Weak at: A/B testing depth is shallower than LaunchDarkly Experimentation; pair with PostHog or GrowthBook if experimentation is core..