Porting content from one game to another is generally not allowed, even between games developed and published by the same company. Therefore, porting content from one game to another is not tolerated on Nexus Mods. But there are some (rare) developers/publishers who allows porting of content from their games to other games. This page is for listing those Developers and Publishers so that you can easily find out which games you can safely port content from and who you can not do so.
The following game developers/Publishers have indicated that they allow content from their games to be ported to other games, provided it is not for profit and that full credit is given: GSC GameWorld (S.T.A.L.K.E.R. series) CD Project Red (The Witcher 1 and 2)