bcWebCam - Scan barcodes and QR Codes with your computer web cam
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
ZXing - Barcode Scanner for Android
Clever - syncing between education applications for K-12 schools
Barcode to PC: Wi-Fi scanner - Turn your smartphone into a real barcode scanner
Claroline - Claroline is a collaborative eLearning and eWorking platform.