Zenity - Zenity is a tool that allows you to display GTK dialog boxes in commandline and shell scripts.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Yad - Yad (yet another dialog) is a fork of Zenity with many improvements, such as custom buttons...
Clever - syncing between education applications for K-12 schools
wxFormBuilder - wxWidgets is an excellent framework that enables the creation of multi-platform applications with...
Claroline - Claroline is a collaborative eLearning and eWorking platform.