This is a thread that will help people to find community produced extensions for their E20 GI JOE games.
If you have developed an extension, please post here with a link to where it can be found.
No copyright material should be listed here.
But if you have an extension you want to share or a forge-link to the creator's mod, then feel free to post it here.

Instructions on how to install an extension here: Extensions Overview

For more information on modding, join the Fantasy Grounds Discord and look at the #mod_creation board for discussions related to developing extensions, as well as a space to ask the modding community questions if you are stuck in development.