With Filestar you get 14 different skills for working productively with Quake 3 Engine Game Data File (.pk3) files.
About .Pk3
Name
Quake 3 Engine Game Data File
Extension
.pk3
Category
Game
Developer
id Software
Description
A PK3 file is an archive used by the Quake 3 and Quake Live gaming engines. It stores game data such as textures, sounds, models, and maps in a compressed format. PK3 files can be opened and extracted with WinZip, WinRAR, or 7-Zip on Windows, and with The Unarchiver on macOS.