The Developers!
Jonzky
Jonzky is responsible for all of the code found in the Garry's Mod add-on or the Lua side of the project, also credited with the initial database design.
Steam
Handy_man
Handy_man is responsible for all of the PHP code which drives the output of the project's stats on the web, also credited with upkeeping/ updating the initial database design for more fields etc.
Steam