GKrellM (GNU Krell Monitors) is a system monitor software based on the GTK+ toolkit that creates a single process stack of system monitors. Developed by GKrellM
License: Open Source
Screenlets is both a Python framework to simplify writing Cairo-drawn desktop widgets, similar to those found in the "Dashboard" feature of OSX, and a collection of widgets written using the framework. It is designed to work with any modern Linux desktop. Developed by Rico Pfaus, Helder Fraga, Natan Yellin
License: Open Source
GKrellM is primarily focused on system monitoring with a more technical interface, while Screenlets offers a variety of customizable widgets for displaying diverse information, making it more visually appealing and user-friendly.