asciiflow - Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Core2D - A multi-platform data driven 2D diagram editor.
Clever - syncing between education applications for K-12 schools
JavE - JavE (Java Ascii Versatile Editor) is a free Ascii Editor.
Claroline - Claroline is a collaborative eLearning and eWorking platform.