The Eclipse Public License (EPL) is a license for free software. Its primary use is for the Eclipse software development tools. Free software, as defined by the Free Software Foundation, is software which can be used, copied, studied, modified and redistributed without restriction. ... Eclipse is a free software / open source platform-independent software framework for delivering what the project calls rich-client applications, as opposed to thin client browser-based applications. ...
Free Software Foundation lists EPL as an approved license, but note that it is not compatible with the GNU General Public License. The Free Software Foundation logo The Free Software Foundation (FSF) is a non-profit organization founded in October 1985 by Richard Stallman to support the free software movement (free as in freedom), and in particular the GNU project. ... The GNU logo The GNU General Public License (GNU GPL or simply GPL) is a free software license, originally written by Richard Stallman for the GNU project. ...