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Unleash

Open-source feature flag and experimentation service

As of 25 August 2026, Unleash has a free plan and paid plans start at $75/month. Open-source feature management platform for feature flags, A/B testing and gradual rollouts, cloud or self-hosted. Softwr lists it under Software Development. Unleash is available on Web, API, Linux.

Overview

What Unleash does

Unleash is an open-source feature flag service used to manage feature flags, run A/B/n experiments, and control gradual rollouts across applications. It offers a cloud-hosted Pay-As-You-Go plan and a self-hosted or hybrid Enterprise option, with 25+ SDKs, custom targeting, audit logs, and SSO support, aimed at engineering teams practicing continuous delivery and progressive delivery.

What people use it for

  • Gradual and progressive feature rollouts
  • Running A/B/n experiments tied to flags
  • Self-hosting feature management for compliance needs
  • Enterprise SSO-controlled feature flag governance

The honest half

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Unleash.

  • The Pay-As-You-Go plan is priced per seat, which can get costly for larger teams.
  • Self-hosted Enterprise requires a minimum of 5 seats and an annual contract.
  • Additional API traffic beyond the included quota is billed per million requests.
  • Advanced SLAs and dedicated customer success are reserved for the custom Enterprise tier.

Cross-shopped

What people choose instead of Unleash

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

  • Unleash logo
    Unleash
    vs
    Flagsmith logo
    Flagsmith

    Flagsmith: Another open-source feature flag platform with similar self-hosted options.

  • Unleash logo
    Unleash
    vs
    LaunchDarkly logo
    LaunchDarkly

    LaunchDarkly: A commercial feature management platform with a broader managed feature set.

Pricing

What Unleash costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Pay-As-You-Go

$75 /mo

  • Cloud-hosted
  • 53M API requests/month included
  • Unlimited feature flags, projects and environments
  • 99.9% uptime SLA

Custom Enterprise

On request

  • Cloud, self-hosted or hybrid
  • Premium support options
  • 99.99% uptime SLA
  • Dedicated customer success manager

Capabilities

Features

  • Feature flags

    Unlimited feature flags across projects and environments

  • A/B/n testing

    Run multivariate experiments using flag variants

  • Custom targeting

    Target rollouts using custom user segments and rules

  • SDKs

    25+ client and server SDKs across languages

  • SSO

    SAML 2.0 and OpenID Connect single sign-on

  • Audit logs

    Audit logs retained for up to two years

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

What does Unleash cost?

Unleash offers a Pay-As-You-Go cloud plan at $75/seat/month with a 14-day free trial, plus a custom-priced Enterprise plan for self-hosted or hybrid deployments.

Source
How is usage metered?

The Pay-As-You-Go plan includes 53M API requests per month, with additional traffic billed at $5 per million requests thereafter.

Source
What does Unleash integrate with, and is there an API?

Unleash provides an API and 25+ official SDKs across languages, along with SSO integrations via SAML 2.0 and OpenID Connect.

Source
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Softwr does not host reviews and shows no star rating for Unleash, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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