materia-kde is a port of the popular GTK theme Materia for Plasma 5 desktop with a few additions and extras.

Powerful media converter. FFmpeg can read audio and video files in various formats and convert them into other formats. MystiQ features an intuitive graphical interface and a rich set of presets to help you convert media files within a few clicks. Advanced users can also adjust conversion parameters in detail.

topplot produces graphs of information it munges from top logs. It can select which processes to focus on, and it can split out information by cpu core (if top was configured to record the cpu core column, and/or display the cpu summary info by core). topplot can save the graphs as PNG files. It can also print information derived from the logs to stdout, with or without emitting the graphs. There may be better, more efficient ways of collecting live system information, but if for some reason you've hundreds of thousands of lines of top logs and you want to see what's in them, topplot can help.