HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.
itch.io - An online game marketplace and community.
Freemake Video Converter - Freemake Video Converter Converts 500+ Formats & Gadgets FREE! Convert to MP4, AVI, MKV, WMV, DVD, Xvid. FREE Download. **Voted Best of 2018** Comes with FREE…
GOG.com - DRM-free game store, selling both new and old titles. No clients required.
File Converter - Convert & compress everything in 2 clicks!
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.