MatterControl has the ability to extend its functions with plugins, pieces of code that are loaded at runtime along with the basic MatterControl. If you are a software developer, you can create your own plugins for your use or explore adding them to MatterControl itself. As an open source project, in principle anyone can add to MatterControl. In practice most development is done by MatterHackers, but the code is put out as open source software on Github.
Tip If you are interested in developing a plugin yourself, ...