DC++ - DC++ developed by Jacek Sieka.

NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.

EiskaltDC++ - EiskaltDC++ is a program for UNIX-like systems that uses the Direct Connect and ADC protocol.

Canvas by Instructure - The Canvas LMS is the world's fastest growing learning management system. Check out favorite features and schedule a live demo!

LinuxDC++ - LinuxDC++ is a port of https://alternativeto.net/software/dc/ direct connect client to Linux.

ExamView Assessment Suite - ExamView lets you can create assignments, launch classroom assessment questions and collect real-time responses to evaluate student performance.