---
title: "Feature Toggles"
url: "https://pipelinedriven.org/feature-toggle-frameworks-list.md"
canonical: "https://pipelinedriven.org/feature-toggle-frameworks-list"
tags: []
author: "Roy Osherove"
description: "A list of feature toggle (feature flag, feature bit) frameworks for Java, Python, .NET, Ruby and more."
usage: "Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page)."
license: "https://creativecommons.org/licenses/by/4.0/"
---

# Feature Toggles

Tools

# Feature Toggle Framework List

Also known as [Feature Bits and Feature Flags](http://martinfowler.com/bliki/FeatureToggle.html), here is a list of some of the frameworks you can find in the wild for your favorite language.

[Here is a form to submit frameworks not listed here](https://docs.google.com/forms/d/1kH3YpF2Y8sR0oXhW7HE1YxSuUs_2XWahfaDhJtEC1EM/viewform)

---

## Feature Flags in Java

1. [Togglz](http://www.togglz.org/)
2. [FF4J](http://ff4j.org/)
3. [Fitchy](https://github.com/akomtur/fitchy)
4. [Flip](https://github.com/tacitknowledge/flip)

## Feature Flags in Python

1. [Gargoyle](https://github.com/disqus/gargoyle)
2. [Gutter](https://github.com/disqus/gutter)

## Feature Flags in .NET, C#

1. [FeatureSwitcher](https://github.com/mexx/FeatureSwitcher)
2. [NFeature](https://github.com/benaston/NFeature)
3. [FlipIt](https://github.com/timscott/flipit)
4. [FeatureToggleNET](https://github.com/jason-roberts/FeatureToggle)
5. [List on NUget](http://nugetmusthaves.com/Tag/toggle)
6. [FeatureBee](https://github.com/AutoScout24/FeatureBee)

## Feature Flags in Ruby and Ruby on Rails

1. [rollout](https://github.com/FetLife/rollout)
2. [feature\_flipper](https://github.com/qype/feature_flipper)
3. [flip](https://github.com/pda/flip)
4. [setler](https://github.com/ckdake/setler)
5. [switches](https://github.com/jpignata/switches)
6. [FluidFeatures](https://github.com/FluidFeatures)


---

## About the author

**Roy Osherove**: Senior Solutions Architect at AWS working on AI for production and AI-driven development; author of The Art of Unit Testing and Elastic Leadership, with about 20 years of consulting and training on unit testing, TDD, team leadership and continuous delivery.

### Sites

- [RobotPaper](https://robotpaper.ai/): This blog: AI patterns and anti-patterns, AI and coding agents, and engineering leadership.
- [osherove.com](https://osherove.com): Roy's personal site. Author of The Art of Unit Testing and Elastic Leadership; consulting and training on unit testing, TDD, team leadership and continuous delivery, plus about 20 years of blog posts.
- [The Art of Unit Testing](https://www.artofunittesting.com): The Art of Unit Testing, 3rd Edition (Manning): readable, maintainable, trustworthy unit tests, plus TDD workshops in C#, JavaScript, Java and Kotlin.
- [5whys.com](https://www.5whys.com): Roy's writing on software team leadership: self-organizing teams, surviving chaos, learning mode and the Elastic Leadership model.
- [Pipeline Driven](https://pipelinedriven.org): Continuous delivery and DevOps practices: build patterns, pipeline-friendly testing, DevOps metrics and enterprise DevOps.
- [Elastic Leadership](https://www.elasticleadership.com): Elastic Leadership, Roy's framework for software team leaders (survival, learning and self-organizing modes).

### Social

- X: https://x.com/royosherove
- LinkedIn: https://www.linkedin.com/in/osherove/

### Contact

- Contact form: https://forms.gle/jQSx5KoXvrVA1JCK7

### License

Licensed under CC BY 4.0 — reuse, quote and adapt with attribution (Roy Osherove, link to the original page). License: https://creativecommons.org/licenses/by/4.0/