...Its clean design and implementation make JForum easy to customize and extend.
There is extensive documentation of all aspects of the software at https://sourceforge.net/p/jforum2/wiki2/Home/
Sourcecode and a beta build are available for running JForum on JakartaEE 10 environments such as Tomcat 10.1; it requires Java 11. This has not been tested as extensively, but does not have any known bugs.
It is freely available under the BSD license, and has recently been awarded the SourceForge "Community Choice" badge.
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