Top Alternatives to Update Manager

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

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

Synaptic is a GTK+-based graphical user interface for Advanced Packaging Tool (APT)—the Package management system used by Debian and its derivatives. Synaptic is usually used on systems based on deb packages but can also be used on systems based on RPM packages.

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

Ubuntu Software Center or simply Software Center was a high-level graphical front end for the APT/dpkg package management system. It was free software written in Python, PyGTK/PyGObject based on GTK+.

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.

Update-manager is a frontend for the apt package management system. It allows you to perform some actions of the command line tool apt-get in a graphical interface.

Ketarin is a small application which automatically updates setup packages.

pacman is a package manager written specifically for Arch Linux.

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-like persistence of user actions, the ability to retrieve and display the Debian changelog of most packages, and extreme flexibility and customization.

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.

MacUpdate Desktop keeps your apps up-to-date.

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

Just Install is a windows package manager.