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Programming language: Go
License: GNU General Public License v3.0 only
Latest version: v1.2.1

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README

An open-source, on-prem feature flag solution

[Flipt](demo.gif)

Documentation | Features | Values | Examples | Enterprise

Flipt is an open source, on-prem feature flag application that allows you to run experiments across services in your environment.

Flipt can be deployed within your existing infrastructure so that you don't have to worry about your information being sent to a third party or the latency required to communicate across the internet.

Flipt supports use cases such as:

  • Simple on/off feature flags to toggle functionality in your applications
  • Rolling out features to a percentage of your customers
  • Using advanced segmentation to target and serve users based on custom properties that you define

Features

  • Fast. Written in Go. Optimized for performance
  • Stand alone, easy to run and configure
  • Ability to create advanced distribution rules to target segments of users
  • Native GRPC client SDKs to integrate with your applications
  • Simple REST API
  • Modern UI and debug console
  • Support for multiple databases (Postgres, MySQL, SQLite)
  • Data import and export to allow storing your flags as code

Values

  • :lock: Security - HTTPS support. No data leaves your servers and you don't have to open your systems to the outside world to communicate with Flipt. It all runs within your existing infrastructure.
  • :rocket: Speed - Since Flipt is co-located with your existing services, you do not have to communicate across the internet which can add excessive latency and slow down your applications.
  • :white_check_mark: Simplicity - Flipt is a single binary with no external dependencies by default.
  • :no_entry: Privacy - No telemetry data is collected or sent by Flipt. Ever.
  • :thumbsup: Compatability - REST, GRPC, MySQL, Postgres, SQLite.. Flipt supports it all.

Examples

Check out the examples to see how Flipt works.

Here's a basic one to get started!

Try It

[Flipt Docker](cli.gif)

Try Flipt out yourself with Docker:

❯ docker run --rm -p 8080:8080 -p 9000:9000 -t markphelps/flipt:latest

Flipt UI will now be reachable at http://127.0.0.1:8080/.

For more permanent methods of running Flipt, see the Installation section.

GRPC Clients

Licensing

There are currently two types of licenses in place for Flipt:

  1. Client License
  2. Server License

Client License

All of the code required to generate GRPC clients in other languages as well as the existing GRPC Go client are licensed under the MIT License.

This code exists in the [rpc/](rpc/) directory.

The client code is the code that you would integrate into your applications, which is why a more permissive license is used.

Server License

The server code is licensed under the GPL 3.0 License.

See [LICENSE](LICENSE).

Enterprise

Need more features or support using Flipt within your Enterprise?

Please help me prioritize an Enterprise version of Flipt by filling out this short survey!

Potential Features

  • Business-friendly Licensing
  • User Management and Audit Trail
  • Multiple Environments (ex: dev/staging/prod)

Author

twitter/mark_a_phelps
Mark Phelps

Contributing

I would love your help! Before submitting a PR, please read over the [Contributing](.github/contributing.md) guide.

No contribution is too small, whether it be bug reports/fixes, feature requests, documentation updates, or anything else that can help drive the project forward.

Contributors ✨

Thanks goes to these wonderful people (emoji key):

<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section --> <!-- prettier-ignore-start --> <!-- markdownlint-disable --> Aaron Raff💻 Rodrigo Chacon💻 Christopher Diehl💻 Andrew Z Allen📖 Sebastien Armand💻 Dat Tran💻 Jon Perl⚠️ 💻 Or Elimelech💻 giddel💻 Eduardo📖 💻

<!-- markdownlint-restore --> <!-- prettier-ignore-end -->

<!-- ALL-CONTRIBUTORS-LIST:END -->

This project follows the all-contributors specification. Contributions of any kind welcome!


*Note that all licence references and agreements mentioned in the flipt README section above are relevant to that project's source code only.