yalp.io - Automatic chords extraction from mp3 and YouTube
CSE Classroom Manager - Technology for Education
ChordU - Extracts chords from any song, integrated YouTube.
NetSupport School - NetSupport School supports a teacher with a wealth of dedicated assessment, monitoring, collaboration and control features.
Guitaa.com - Turn ANY song into chords, play along with interactive chords and diagram, transpose, loop, tempo control.
Class Charts - Class Charts is super fast behaviour management software, creating school seating plans in seconds.