Been looking for this for a long time. I needed a distro that I could use from a flash stick, on any computer. Tried Lubuntu, Slacky, Puppy, Slitaz, LXLE and numerous others. All were missing 'something'.
Was using PCLinuxOS at home, LXLE 14.04 at office,and as portable system.
Porteus has been my primary working distro for about six months now, and after getting my head around the modules. I am now promoting Porteus 3.22 64 bit (MATE) to my primary office OS (ThinkPad edge), and Porteus 3.22 64bit (Cinnamon) as my portable system (16Gb Sandisk).
Modules: Firefox, Libreoffice, printing.