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LaunchDarkly

The best-known feature management platform for flags, progressive rollouts, experiments and AI configs.

Free plan + paidProduct analytics tools
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About LaunchDarkly

LaunchDarkly is the market leader in feature flags. Developers wrap code in flags, then product and engineering teams turn features on for specific users, run percentage rollouts, kill a broken release instantly, or schedule launches without redeploying. Around flagging it has built release guardrails that watch error and performance metrics, experimentation, approval workflows and audit logs for regulated teams, and configuration tools for prompts and models in AI applications. SDKs cover essentially every language and platform, and its streaming architecture is designed for very high scale. A free Developer plan covers small projects with unlimited seats, the Foundation plan is pay-as-you-go priced on service connections and client-side users, and Enterprise is negotiated. Costs can rise steeply for large client-side user counts, and smaller teams often find cheaper or open-source flag tools sufficient. It runs in the browser, with a CLI and integrations for common developer tools.

Best for: Engineering organisations that need governed feature releases at scale.

Pros and cons

What works

  • Mature flagging with SDKs for nearly every platform
  • Release guardrails, approvals and audit logs
  • Unlimited seats with no per-seat pricing

Why people leave

  • Costs climb with client-side users and connections
  • Experimentation is an extra cost on top of flags
  • More than a small team needs

Top LaunchDarkly alternatives

See all 7
  1. 1Unleash logo
    Unleash

    Open-source feature flags you can self-host, with an enterprise tier.

    66.5
  2. 2Flagsmith logo
    Flagsmith

    Open-source flags with hosted, private cloud and on-prem options.

    62.6
  3. 3ConfigCat logo
    ConfigCat

    Simple hosted flags with unlimited seats and a forever-free plan.

    59.6
  4. 4Statsig logo
    Statsig

    Flags with a stronger built-in experimentation engine.

    57.2
  5. 5GrowthBook logo
    GrowthBook

    Open-source flags plus warehouse-native A/B testing.

    55.3

Why people left LaunchDarkly

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

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LaunchDarkly: common questions

Is LaunchDarkly free?

LaunchDarkly has a free plan and paid plans. Free plan: Developer, $0/month (checked on LaunchDarkly's own site).

Is LaunchDarkly open source?

No, LaunchDarkly is not open source. Open-source alternatives include Unleash, Flagsmith and GrowthBook.

What platforms does LaunchDarkly run on?

LaunchDarkly is available for Web.

What are the best alternatives to LaunchDarkly?

The highest-ranked LaunchDarkly alternatives right now are Unleash, Flagsmith and ConfigCat. See the full ranked list for pricing, platforms and verified facts.

See all 7 LaunchDarkly alternatives