WinFF is a graphical user interface for FFmpeg. It will convert almost any video file that FFmpeg will convert. WinFF does multiple files in multiple formats at one time. You can, for example, convert mpeg's, flv's, and mov's into avi's (or DVD/VCD format or MPEG or 3gp etc.) all at once.

Weka is a collection of machine learning algorithms in Java that can either be used from the command-line, or called from your own Java code. Weka is also ideally suited for developing new machine learning schemes.

deborphan finds "orphaned" packages on your system. It determines which packages have no other packages depending on their installation and shows you a list of these packages. It is most useful when finding libraries, but it can be used on packages in all sections.

Prometheus exporter for machine metrics, written in Go with pluggable metric collectors.

A command line tool for flashing an Android device, boot an Android device to fastboot mode, etc..

RealtimeKit is a D-Bus system service that changes the scheduling policy of user processes/threads to SCHED_RR (i.e. realtime scheduling mode) on request. It is intended to be used as a secure mechanism to allow real-time scheduling to be used by normal user processes.