Copyright ©2013 abandenz
FREEUSE

Original Post: https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/1290619-freeuse-no-permission-needed-fpsplus-1-5-2-1-7-10

You can do anything you want with FpsPlus without an ask with abandenz according to his posts.

see https://www.minecraftforum.net/members/abandenz/posts