netty/netty

Netty project - an event-driven asynchronous network application framework

JavaApache-2.034.8k16.3k859621 open issues
Created Nov 9, 2010Last commit Feb 22, 2026Last human commit Feb 21, 2026
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Netty Project

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients.

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How to build

For the detailed information about building and developing Netty, please visit the developer guide. This page only gives very basic information.

You require the following to build Netty:

Note that this is build-time requirement. JDK 5 (for 3.x) or 6 (for 4.0+ / 4.1+) is enough to run your Netty-based application.

Branches to look

Development of all versions takes place in each branch whose name is identical to <majorVersion>.<minorVersion>. For example, the development of 3.9 and 4.1 resides in the branch '3.9' and the branch '4.1' respectively.

Usage with JDK 9+

You can read the Modular Netty guide to learn more about using Netty with the Java Platform Module System, the guide contains a user section and a developer section for Netty contributors.

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