Stacer - Ubuntu system optimizer
Chocolatey - The sane way to manage software on Windows.
Ultimate Windows Tweaker - Ultimate Windows Tweaker is a freeware Tweak UI Utility for tweaking and optimizing Windows.
Scoop - A command-line installer for Windows
NeteXt'73 - NeteXt'73 is a collection of useful scripts. Its main function is to facilitate the installation of eXt 73 kernels and optimizations.
Ninite - Ninite is the easiest way to install software.