rlib is a glua library written for garrys mod which contains a variety of functions and features that allow for easier ways of creating addons. This library will act as the foundation for other scripts and functionality you wish to add to your server, all while ensuring that your code remains clean and minimal.
As of v220.127.116.11; rlib is now being packaged as a "lite" version. Server owners should notice no difference other than less files. rlib legacy (prior to v3.2) is only for specific servers, and no longer needed by the public.