itch.io - An online game marketplace and community.
Wheel Decide - Wheel Decide is a free to use web-based spinner platform that allows the people create their own digital wheels system for prize giveaways, decision making, games and much more.
GOG.com - DRM-free game store, selling both new and old titles. No clients required.
RANDOM.ORG - RANDOM.ORG offers true random numbers to anyone on the Internet.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.
Wheel of Names - Free and easy to use spinner. Used by teachers and for raffles. Enter names, spin wheel to pick a random winner. Customize look and feel, save and share wheels.