Re:An excessive list of free services for open source projects
by Karunamon on Monday January 12, 2015 @10:56AM
(#8874533)
JetBrains has their entire library of tools (excellent IDE's like IntelliJ, RubyMine, etc) free for open source projects. It requires you email them for approval, but the process is quick and painless.
https://www.jetbrains.com/devnet/sponsorship/open-source/