GPL Encourages it doesn't discourage the charging of software. Please give me one source where they discourage charging fees for software. In regard to copyrigh

GPL Encourages it doesn't discourage the charging of software. Please give me one source where they discourage charging fees for software. In regard to copyright you are 100% correct, but the GPL is copyleft not copyright. You can't blend in copyright and Open Source those are two different things unless the latest Google vs Oracle API fiasco follows through. My favorite IDE RStudio is AGPL which offers a Open Source license that also allows them to charge for added features. http://www.rstudio.com/pricing/ http://www.rstudio.com/pricing/ AGPL - The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software. [http://opensource.org/licenses/AGPL-3.0 http://opensource.org/licenses/AGPL-3.0]