Klassly
Klassroom SAS
Classify — School Planner
Principal Technologies Ltd
ClassLink LaunchPad
ClassLink
ClassDojo:班级和家庭
ClassDojo
IXL
IXL Learning
Google Classroom
Google LLC
Kahoot! Play & Create Quizzes
Kahoot!
Employee Schedule & Time Clock
Homebase Team Management
MasterClass: Become More You
MasterClass Inc.
Khan Academy