Veyon, Moodle, Google Classroom, ClassGen, LearnCube, Open edX, Instructure Canvas, Schoology, Classlife, Fedena, SWAD, Edme, OpenClass, Seesaw, Chamilo, NEO LMS, GoConqr, ManageBac, SchoolRack, Create eLearning, Uniyo, LearningStone, Looop, Examination Online, gotoClassroom, Engrade, eloomi, Absorb LMS, GnosisConnect LMS, Abara LMS, EDUMAAT, Beanz are some alternatives to Crammut.