Other sources of modules
Beside the Vassal 
module library there are a number of other resources on the web for Vassal modules. The modules contained in those resources may or may not be available in the regular module library.
Collections
- Modules - Limey Yank Games
- Modules by Decision Games
- Modules from Revolution Games
- Modules of older SPI games.
Specific games
- ?
If you know of a resource not listed here, please add it to this post (this post is a Wiki-post which means anyone can edit it).