I think that the good approach was taken by Twisted Matrix: https://twistedmatrix.com/trac/wiki/CommunityCode https://twistedmatrix.com/trac/wiki/CommunityCode

I think that the good approach was taken by Twisted Matrix: https://twistedmatrix.com/trac/wiki/CommunityCode https://twistedmatrix.com/trac/wiki/CommunityCode "official" Twisted projects retain the "Twisted" name. Community projects related to twisted use the "tx" prefix. This allows both a clear identification of related code, and present no issue with trademarks.