JFlex is free software and available for download from this page and a number of mirrors.

JFlex + documentation
JFlex maven plugin

The distribution includes installation procedures, documentation, pre-compiled classes and source code of JFlex. The package jflex-maven-plugin contains the source code of the JFlex plugin for the maven build tool. They are not necessary to run or build JFlex, only to change the plugin itself.

Stay informed

jflex-announce is a mailing-list for notification on new JFlex releases and severe bugs. This list is read only and very low traffic. Your email address will be kept private.