What kind of license does Easy Redmine have?

Easy Redmine is an Open Source software. The application code is partly licensed under GNU GPL 2 (the Redmine base), another part is under Easy Software Commercial License (while respecting open source criteria), and various other third party components maintain their original licences (such as Apache 2.0, MIT, etc.). More details about licenses can be found in the Terms and Conditions (section 7)

By buying the software you obtain an installable package containing uncompiled source code.