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Simplify your code production through the world’s largest open-source feature management platform.

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Why use Unleash on Plural?

Plural helps you deploy and manage the lifecycle of open-source applications on Kubernetes. Our platform combines the scalability and observability benefits of managed SaaS with the data security, governance, and compliance benefits of self-hosting Unleash.

If you need more than just Unleash, look for other cloud-native and open-source tools in our marketplace of curated applications to leapfrog complex deployments and get started quickly.

Unleash’s websiteGitHubLicenseInstalling Unleash docs
Deploying Unleash is a matter of executing these 3 commands:
plural bundle install unleash unleash-aws
plural build
plural deploy --commit "deploying unleash"
Read the install documentation

About Unleash

Unleash is an open source feature management solution. It improves the workflow of your development team and leads to quicker software delivery. Unleash increases efficiency and gives teams full control of how and when they enable new functionality for end users. Unleash lets teams ship code to production in smaller releases whenever they want.

Feature toggles make it easy to test how your code works with real production data without the fear that you'll accidentally break your users' experience. It also helps your team work on multiple features in parallel without each maintaining an separate feature branch.

Unleash is the largest open source solution for feature flagging on GitHub. There's 12 official client and server SDKs and 10+ community SDKs available; you can even make your own if you want to. You can use Unleash with any language and any framework.

Get started in 2 steps

1. Start Unleash

With git and docker installed, it's easy to get started:

Run this script:

git clone git@github.com:Unleash/unleash.git
cd unleash
docker compose up -d

Then point your browser to localhost:4242 and log in using:

  • username: admin
  • password: unleash4all

If you'd rather run the source code in this repo directly via Node.js, see the step-by-step instructions to get up and running in the contributing guide.

2. Connect your SDK

Find your preferred SDK in our list of official SDKs and import it into your project. Follow the setup guides for your specific SDK.

If you use the docker compose file from the previous step, here's the configuration details you'll need to get going:

  • For front-end SDKs, use:
    • URL: http://localhost:4242/api/frontend/
    • clientKey: default:development.unleash-insecure-frontend-api-token
  • For server-side SDKs, use:
    • Unleash API URL: http://localhost:4242/api/
    • API token: default:development.unleash-insecure-api-token

If you use a different setup, your configuration details will most likely also be different.

Check a feature toggle

Checking the state of a feature toggle in your code is easy! The syntax will vary depending on your language, but all you need is a simple function call to check whether a toggle is available. Here's how it might look in Java:

if (unleash.isEnabled("AwesomeFeature")) {
  // do new, flashy thing
} else {
  // do old, boring stuff

Run Unleash on a service?

If you don't want to run Unleash locally, we also provide easy deployment setups for Heroku and Digital Ocean:

Deploy to Heroku Deploy to DigitalOcean

Configure and run Unleash anywhere

The above sections show you how to get up and running quickly and easily. When you're ready to start configuring and customizing Unleash for your own environment, check out the documentation for getting started with self-managed deployments, Unleash configuration options, or running Unleash locally via docker.

Online demo

Try out the Unleash online demo.

The Unleash online demo

Community and help — sharing is caring

We know that learning a new tool can be hard and time-consuming. We have a growing community that loves to help out. Please don't hesitate to reach out for help.

Join Unleash on Slack

💬 Join Unleash on Slack if you want ask open questions about Unleash, feature toggling or discuss these topics in general.

💻 Create a GitHub issue if you have found a bug or have ideas on how to improve Unleash.

📚 Visit the documentation for more in-depth descriptions, how-to guides, and more.

Contribute to Unleash

Building Unleash is a collaborative effort, and we owe a lot of gratitude to many smart and talented individuals. Building it together with community ensures that we build a product that solves real problems for real people. We'd love to have your help too: Please feel free to open issues or provide pull requests.

Check out the CONTRIBUTING.md file for contribution guidelines and the Unleash developer guide for tips on environment setup, running the tests, and running Unleash from source.


The Unleash contributors

Features our users love

Flexibility and adaptability

Security and performance

  • Privacy by design (GDPR and Schrems II). End-user data never leaves your application.
  • Audit logs
  • Enforce OWASP's secure headers via the strict HTTPS-only mode
  • Flexible hosting options: host it on premise or in the cloud (any cloud)
  • Scale the Unleash Proxy independently of the Unleash server to support any number of front-end clients without overloading your Unleash instance

Looking for more features?

If you're looking for one of the following features, please take a look at our Pro and Enterprise plans:


Read more in the system overview section of the Unleash documentation.

Unleash SDKs

To connect your application to Unleash you'll need to use a client SDK for your programming language.

Official server-side SDKs:

Official front-end SDKs:

The front-end SDKs connects via the Unleash Proxy in order to ensure privacy, scalability and security.

Community SDKs:

If none of the official SDKs fit your need, there's also a number of community-developed SDKs where you might find an implementation for your preferred language (such as Elixir, Dart, Clojure, and more).

Users of Unleash

Unleash is trusted by thousands of companies all over the world.

Proud Open-Source users: (send us a message if you want to add your logo here)

The Unleash logo encircled by logos for Finn.no, nav (the Norwegian Labour and Welfare Administration), Budgets, Otovo, and Amedia. The encircling logos are all connected to the Unleash logo.

Migration guides

Unleash has evolved significantly over the past few years, and we know how hard it can be to keep software up to date. If you're using the current major version, upgrading shouldn't be an issue. If you're on a previous major version, check out the Unleash migration guide!

Want to know more about Unleash?

Videos and podcasts

Articles and more

How Plural works

We make it easy to securely deploy and manage open-source applications in your cloud.

Select from 90+ open-source applications

Get any stack you want running in minutes, and never think about upgrades again.

Securely deployed on your cloud with your git

You control everything. No need to share your cloud account, keys, or data.

Designed to be fully customizable

Built on Kubernetes and using standard infrastructure as code with Terraform and Helm.

Maintain & Scale with Plural Console

Interactive runbooks, dashboards, and Kubernetes api visualizers give an easy-to-use toolset to manage application operations.

Learn more
Screenshot of app installation in Plural app

Build your custom stack with Plural

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Explore the Marketplace

Used by fast-moving teams at

  • CoachHub
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  • Fnatic
  • Fsn
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  • Mot Mac

What companies are saying about us

We no longer needed a dedicated DevOps team; instead, we actively participated in the industrialization and deployment of our applications through Plural. Additionally, it allowed us to quickly gain proficiency in Terraform and Helm.

Walid El Bouchikhi
Data Engineer at Beamy

I have neither the patience nor the talent for DevOps/SysAdmin work, and yet I've deployed four enterprise-caliber open-source apps on Kubernetes... since 9am today. Bonkers.

Sawyer Waugh
Head of Engineering at Justifi

This is awesome. You saved me hours of further DevOps work for our v1 release. Just to say, I really love Plural.

Ismael Goulani
CTO & Data Engineer at Modeo

Wow! First of all I want to say thank you for creating Plural! It solves a lot of problems coming from a non-DevOps background. You guys are amazing!

Joey Taleño
Head of Data at Poplar Homes

We have been using Plural for complex Kubernetes deployments of Kubeflow and are excited with the possibilities it provides in making our workflows simpler and more efficient.

Jürgen Stary
Engineering Manager @ Alexander Thamm

Plural has been awesome, it’s super fast and intuitive to get going and there is zero-to-no overhead of the app management.

Richard Freling
CTO and Co-Founder at Commandbar

Case StudyHow Fnatic Deploys Their Data Stack with Plural

Fnatic is a leading global esports performance brand headquartered in London, focused on leveling up gamers. At the core of Fnatic’s success is its best-in-class data team. The Fnatic data team relies on third-party applications to serve different business functions with every member of the organization utilizing data daily. While having access to an abundance of data is great, it opens up a degree of complexity when it comes to answering critical business questions and in-game analytics for gaming members.

To answer these questions, the data team began constructing a data stack to solve these use cases. Since the team at Fnatic are big fans of open-source they elected to build their stack with popular open-source technologies.


Plural is open-source and self-hosted. You retain full control over your deployments in your cloud. We perform automated testing and upgrades and provide out-of-the-box Day 2 operational workflows. Monitor, manage, and scale your configuration with ease to meet changing demands of your business. Read more.

We support deploying on all major cloud providers, including AWS, Azure, and GCP. We also support all on-prem Kubernetes clusters, including OpenShift, Tanzu, Rancher, and others.

No, Plural does not have access to any cloud environments when deployed through the CLI. We generate deployment manifests in the Plural Git repository and then use your configured cloud provider's CLI on your behalf. We cannot perform anything outside of deploying and managing the manifests that are created in your Plural Git repository. However, Plural does have access to your cloud credentials when deployed through the Cloud Shell. Read more.