Flagsmith vs Unleash
Self-host pick — both replace LaunchDarkly (Feature flags / progressive delivery).
Both Flagsmith and Unleash self-host as a replacement for LaunchDarkly (Feature flags / progressive delivery). Pick Unleash if you want the lighter footprint — 20min docker-compose (Node + Postgres), $10/mo vps for the app; sdks are free. Pick Flagsmith if you need teams that want flags + remote config + A/B testing in one tool with a polished Django-based admin UI — 20min docker-compose (Django + Postgres + InfluxDB optional) and $10/mo vps.
| Flagsmithopen-source | Unleashopen-source | |
|---|---|---|
| License | BSD-3-Clause | Apache-2.0 |
| Setup time | 20min docker-compose (Django + Postgres + InfluxDB optional) | 20min docker-compose (Node + Postgres) |
| Monthly cost | $10/mo VPS. | $10/mo VPS for the app; SDKs are free. |
| GitHub | Flagsmith/flagsmith | Unleash/unleash |
| Replaces | LaunchDarkly | LaunchDarkly |
Good fit for
Flagsmith
Teams that want flags + remote config + A/B testing in one tool with a polished Django-based admin UI.
Weak at:Heavier stack than Unleash; Edge Proxy is a separate service to operate.
Unleash
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.
In a terminal? npx -y github:SolvoHQ/os-alt-cli launchdarkly prints LaunchDarkly's self-host options including both —
how the CLI works →
FAQ
Which is easier to self-host, Flagsmith or Unleash?
Flagsmith: 20min docker-compose (Django + Postgres + InfluxDB optional). Unleash: 20min docker-compose (Node + Postgres).
What does each cost to run?
Flagsmith: $10/mo VPS.. Unleash: $10/mo VPS for the app; SDKs are free.. Both projects are free and open source.
Do Flagsmith and Unleash replace the same SaaS?
Yes — both are open-source alternatives to LaunchDarkly.