Reflecto or similar op-sys file access add-in for Plone 5

Consider upgrade from 3.3.n to vers 4 or 5 and one of my favourite function are the add-in reflecto to share files with op-sys, plone and smb.
Any tips on updrade to vars 5 or 4 or use another add-in?

XML Director is exactly doing this. See my "Building bridges" presentation from Plone Conference 2015.