The power of feature flags in the tools you already use
Resilience
Prevent downtime of your application with Unleash's unique API and SDK architecture.
Speed
Work with your feature flags without the need to pull data from the database.
Privacy
Evaluate locally and stay GDPR, CCPA, and HIPAA compliant.
Backed by the open source community
Most Popular SDKs
The SDKs developers currently love connecting to Unleash.
Server-Side SDKs
Build on your server and communicate directly with your Unleash instance.
Go
Build simple, secure, scalable systems with this open-source programming language supported by Google.
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Java
Create with the #1 programming language and development platform for enterprises and developers.
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Node.js
Write JavaScript code that runs directly in a computer process with this cross-platform, open-source server environment. Including TypeScript types.
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PHP
Utilize this popular general-purpose scripting language that is especially suited to web development.
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Python
Apply this high-level, general-purpose programming language that emphasizes code readability.
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Ruby
Use this high-level, general-purpose programming language which supports multiple programming paradigms.
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.NET / C#
Use this free and open-source, managed computer software framework. Successor to .NET Framework.
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Client-Side SDKs
Connect to Unleash Enterprise Edge or the Unleash front-end API.
Android / Kotlin
Build for the leading mobile operating system with the latest Google updates.
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Flutter
Build natively compiled, multi-platform applications from a single codebase with the open-source framework by Google.
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iOS / Swift
Build for the leading mobile operating system developed by Apple Inc. exclusively for its hardware.
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React
Build UI's with this free and open-source front-end JavaScript library based on UI components.
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Svelte
Create with this newer, free and open-source front end component framework and language.
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Vue proxy
Build UI's and single page apps with this open-source, model–view–viewmodel front end JavaScript framework.
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Questions about SDKs + Unleash
Once they have been initialised, all Unleash clients will continue to work perfectly well without an internet connection or in the event that the Unleash Server has an outage.
Yes!
To make implementation easier, check out these resources:
Unleash Client Specifications – Used by all official SDKs to make sure they behave correctly across different language implementations. This lets us verify that a gradual rollout to 10% of the users would affect the same users regardless of which SDK you’re using.
Contributors guidelines – A brief, overall guide of the Unleash Architecture and how to contribute.
Can’t find your favorite programming language in our list? Let us know on Slack, we’d love to create it for you.
The list of support features is always growing and we’d love to hear about your specific use case to see what else we can add.