Hey there! Because I'm a lazy bum there is no directory listing (for now).
You shouldn't point your browser at this URL; it's used by the Aquaria-internal mod downloader.
The source code for the intended Aquaria version can be found below:
https://github.com/AquariaOSE/Aquaria
The script that generates the mod list can be found at:
http://fg.wzff.de/aqmods/index.php.txt (simply a symlink to this php file)
(View page source to see the generated modlist XML)
If there's anything, feel free to send me an email to: fg ät wzff döt de