Easy Redmine
An adaptive project and work management suite
Details
This project is a plugin for the FOSS GPLv2 project Redmine.
It advertises itself as open source software, like within its FAQ where it states:
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)
The Easy Software Commercial License however is not an open source license, since it places significant limits on use and distribution.
The project appears to be funded by selling its software or providing it as a service.