To the best of my knowledge, all included modpacks are permitted to be used in public packs. As I research further and make sure everything in this pack works properly (with help from testers), I will also make absolutely sure of this; I did, however, not notice anything saying it can't be used as I was updating the mods I was originally using. In fact, most of them stated on their sites, in plain sight, that they can be used freely. I'll have to drop them a line to thank them for these wonderful mods. Permissions actually obtained will be listed below as I receive them.