getusr
Gets all (or certain) users on a Mac (Darwin), Windows or Linux system (since I could hardly find any other packages that did this on multiple systems and were updated.) Mainly a side-project, so I'll try to keep in touch then and there, but don't expect 24/7 activeness.
Currently, only Linux (and linux-like systems) are supported, however Windows is the next OS I plan to make this project work on.