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Flipt

A single-binary feature flag server that stores flags in Git

Visit flipt.io

Our verdict

#3 of 4 in Self-hosted feature flags · For one binary and Git

Pros

  • Nothing else to install for a default v2 server
  • The homepage says the open-source edition is free forever
  • Every change is a Git commit, in the homepage's description

Cons

  • The server is Fair Core License 1.0, MIT Future License. The Go SDK and clients are MIT
  • Merge proposals are a Pro feature
  • Pro is $200 a month, or $2,000 a year

Who should skip:A team that will not run a server under the Fair Core License.

Read the full review →

Rankings and alternatives

Self-hosted feature flags scores

Evaluated Nov 8, 2026 Evidence ↓
  • Setup 5

    5/5 means: One binary, and no database by default

    The v2 docs say it is a standalone binary with no database or cache by default, and no external services.

  • Free self-hosted edition 5

    5/5 means: Self-hosting is free, and the pages state no cap on users or flags for that build

    The homepage labels the open-source edition free forever. Pro is a separate license for features such as merge proposals, priced at $200 a month or $2,000 a year on the README.

  • Experiments 3

    3/5 means: A percentage split across flag variants, and no experiment statistics engine in the docs we read

    The v1 introduction documents a percentage distribution across variants. The v1 introduction, v2 introduction, homepage, and README do not describe a statistics engine. That absence is not a statement that experiments are impossible.

  • SDKs 4

    4/5 means: A large SDK list, or OpenFeature plus several languages. Conflicting counts on the project's own pages keep this from a 5

    The homepage says native SDKs for every major language, without a number. The README documents OpenFeature and OFREP.

  • Server license 2

    2/5 means: A source-available or future-open license on the server

    The server is under the Fair Core License 1.0, MIT Future License. The Go SDK and generated clients are MIT. The homepage still labels an edition "Open Source".

Pricing

  • Open source Free The homepage labels this edition free forever.
  • Pro, monthly $200.00 /month The README says monthly licenses need continuous internet connectivity for validation.
  • Pro, annual $2,000.00 /year The README says annual licenses can be validated offline with a license file.

From the vendor’s pricing page, checked Nov 8, 2026. That page is authoritative.

Evidence and sources

Self-hosted feature flags scores

Setup 1 quote
  • “Flipt v2 is a standalone binary that does not depend on any external services. This means that you can run Flipt v2 on any machine that has a compatible operating system. V2 does not require any database or cache by default.”
    docs.flipt.io/v2/introduction · checked
Free self-hosted edition 3 quotes
  • “Open Source Free/ forever Everything you need to deploy feature flags safely. Forever free”
    flipt.io · checked
  • “Monthly licenses - $200/month with continuous internet connectivity for validation”
    github.com/flipt-io/flipt · checked
  • “Merge proposals are a Pro feature. See licensing for details.”
    docs.flipt.io/v2/introduction · checked
Experiments 1 quote
  • “A distribution is a way of assigning a percentage for which entities evaluated get a specific variant.”
    docs.flipt.io/v1/introduction · checked
SDKs 2 quotes
  • “Flipt supports the OpenFeature standard for vendor-neutral feature flag evaluation, including the emerging OpenFeature Remote Evaluation Protocol (OFREP) for standardized remote flag evaluation.”
    github.com/flipt-io/flipt · checked
  • “Native SDKs for every major language. No complex setup, no architectural changes required.”
    flipt.io · checked
Server license 3 quotes
  • “The server code is licensed under the Fair Core License, Version 1.0, MIT Future License.”
    github.com/flipt-io/flipt · checked
  • “All of the code required to generate GRPC clients in other languages as well as the Go SDK are licensed under the MIT License.”
    github.com/flipt-io/flipt · checked
  • “Open Source Free/ forever Everything you need to deploy feature flags safely. Forever free”
    flipt.io · checked

Facts

License 2 quotes
  • “The server code is licensed under the Fair Core License, Version 1.0, MIT Future License.”
    github.com/flipt-io/flipt · checked
  • “All of the code required to generate GRPC clients in other languages as well as the Go SDK are licensed under the MIT License.”
    github.com/flipt-io/flipt · checked
Runs on 1 quote
  • “Flipt v2 is a standalone binary that does not depend on any external services. This means that you can run Flipt v2 on any machine that has a compatible operating system. V2 does not require any database or cache by default.”
    docs.flipt.io/v2/introduction · checked
Needs 1 quote
  • “Flipt v2 is a standalone binary that does not depend on any external services. This means that you can run Flipt v2 on any machine that has a compatible operating system. V2 does not require any database or cache by default.”
    docs.flipt.io/v2/introduction · checked

Other quotes

Not cited by a score or fact 2 quotes
  • “Annual licenses - $2,000/year (save $400) with offline validation using license files for air-gapped environments”
    github.com/flipt-io/flipt · checked
  • “Git-native feature flags that eliminate deployment fear. Toggle features through an intuitive UI while every change becomes a reviewable Git commit.”
    flipt.io · checked

Pricing

github.com/flipt-io/flipt · checked