<em>LockDown Browser® is a custom browser that locks down the testing environment within Blackboard, ANGEL, Brightspace by D2L, Canvas, Moodle, and Sakai. When students use LockDown Browser they are unable to print, copy, go to another URL, or access other applications. When an assessment is started, students are locked into it until they submit it for grading. Available for Windows, Mac and iOS[sic].</em>