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. Developed by Michael Vogt
License: Open Source
Ubuntu Update Manager is designed specifically for managing updates on Ubuntu systems, offering ease of use and strong community support. In contrast, Ketarin is a versatile tool focused on automating software updates across multiple platforms, providing greater customization but requiring more technical knowledge.