Stacer is an open source system optimizer and application monitor that helps users to manage entire system with different aspects, its an all in one system utility.Discontinued
The last version (1.1.0) is from May 2019.
Ultimate Windows Tweaker is a freeware Tweak UI Utility for tweaking and optimizing Windows. It can simply be downloaded and used as a portable application to customize your Windows to meet your requirements.
Gives the user a powerful control center to toggle on and off many system settings in Ubuntu, it is able to change system configurations, system updates, executable improvements, small system fixes, and more at the touch of a button.
NeteXt'73 is a collection of useful scripts. Its main function is to facilitate the installation of eXt 73 kernels and optimizations. It is also expanded with new scripts managing, among others: repositories, keys GPG, SysV, Upstart and Systemd services.
PostInstallerF is a small, lightweight, useful tool that can be used to install 100+ essential softwares, Games, audio/video codecs, and third-party repositories which are not included by default in Fedora, Ubuntu and Manjaro.
The last commit is from Aug 5, 2017