From the Minecraft EULA (http://www.minecraft.net/terms)
"Please think carefully before you make any content available, because it will be made public and might even be used by other people in a way you don‘t like."
Basically, all modifications to the game that are put online are subject to the public domain. This allows us to use the mods without direct permission from the creators, but we prefer when they approve. We checked that all modders gives us permission. Please contact me if you feel something is wrong or forgotten - maxwelljonestekkit AT gmail . com
Thanks to so many modders that let this happen.
All permissions granted and listed. List can be requested if needed. (links, text, etc).
If you want your mod to be removed from this modpack, please contact us through the bug submission form (the fastest way to reach us ;) --> http://tinyurl.com/obrzuz6