Oscurart tools is in my github repository now!
Repository: https://github.com/oscurart
OscurartTools: https://github.com/oscurart/Blender-28-Addons
Installation:
Download the zip and uncompress it:
Put the oscurart_tools folder into the addons_contrib.
If you don't have the "addons_contrib" folder, create it:
Hit "W" in the 3dViewport, you will find it: