aptitude is a terminal-based apt frontend with a number of useful features, including: a mutt-like syntax for matching packages in a flexible manner, dselect-…

Just Install is a windows package manager.

MacPorts (DarwinPorts) is a package management system that simplifies the installation of software on the macOS and Darwin operating systems.

Ninite is a package management system offering that lets users automatically install popular applications.

Patch My PC is a portable and reliable utility designed to check your system against the current version of Adobe Reader, Adobe Acrobat, Adobe Flash, etc.

Sumo is a suite of free tools that can be used to grow your website's traffic. The Sumo tools are easy to install and work on any website.

Chocolatey is a Machine Package Manager, like apt-get for Windows.

Ketarin is a small application which automatically updates setup packages.

MacUpdate Desktop keeps your apps up-to-date.

pacman is a package manager written specifically for Arch Linux.

Software Informer is a safe utility that has been designed specifically for those users who care to keep their applications functional and ready.

Synaptic is a GTK+-based graphical user interface for Advanced Packaging Tool (APT)—the Package management system used by Debian and its derivatives. Synaptic…