forum.webdiplomacy.net - The forum for developers.
forum.webdiplomacy.net - The sourceforge.net project page.
github.com/kestasjk/webDiplomacy - The github .
README.txt - Installation data for webmasters
AGPL.txt - The license protecting this code, if you make changes to the code you've got to share those changes.
Some of the data below may apply mainly to 0.8x, and not be up to date for 0.9x, but the differences are mostly minor.
If you want to make a change this is where you should start. The two images and text files below will give you a feel for where everything is and how webDip is structured, so you know where to go to find whatever you need to change.
To get a patch submitted first check that the idea is okay. If it's not in the todo-list at forum.webdiplomacy.net post it to the ideas section.
Once the patch is done post a link to a demo site where it's working, along with the code, and it'll get added in once it has been checked.
gotchas.txt - Annoying quirks
archive.txt - Info on the archive tables
coasts.txt - Info on how coasts are handled