NineTailLib

NineTailLib is a library package developed by TeamMD5. Its primary focus is rendering, however it adds utilities and library code for a variety of different mod development aspects. It is required for TeamMD5's mods.

The Pokémon called Vulpix and its evolved form called Ninetales are the source of the mod's name and imagery, with the latter being in the name and the former in the logo.

Allegedly, it "[works] together with CodeChickenLib," though it does not reference CodeChickenLib anywhere in its codebase.