Hudson is an extensible continuous integration server written in Java and capable of running on Linux, OS X and Windows.
In early 2011, Hudson was forked into the Hudson and Jenkins projects after a trademark dispute with Oracle.
Hudson remains an open source project, now governed by the Eclipse Foundation, with Oracle being the primary contributor.
The majority of Hudson users, core and plugins developers switched to Jenkins (tag: jenkins).
Hudson has a wide variety of plugins that integrate external tools and source control systems, provide build reports and analytics, and customize build behaviours.
It is common to configure a Hudson installation to run build slaves on several machines in order to build on different platforms, or to provide load balancing.