NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
itch.io - An online game marketplace and community.
Canvas by Instructure - The Canvas LMS is the world's fastest growing learning management system. Check out favorite features and schedule a live demo!
GOG.com - DRM-free game store, selling both new and old titles. No clients required.
ExamView Assessment Suite - ExamView lets you can create assignments, launch classroom assessment questions and collect real-time responses to evaluate student performance.
GnuPlot - Gnuplot is a portable command-line driven interactive data and function plotting utility.