HUDS and GUI, Maps, Skins, Sounds... a big section.

Downloads related to RCBot2 - a single player bot for Day of Defeat:Source

More information here in the RCBot2 Blog.

Half-Life 2 Mapping support - Tools, Models, Textures and Prefabs for HL2

 Most of the files are for HUD and GUI use.

The older "goldsource" dod 1.3  - Skins, GUI, Maps

Some older rare DoD:S plugins, reviewed in 2023. Most contain an expanded readme file on how to install and use.