Brain Pop
Edmentum
Study Island
Educational Videos and Games K-12
Khan Academy (Educational Videoes)
Watch, Know, Learn (Free Educational Videos)
Kahoot
Plickers
Socrative
Google Forms has it's own quiz format for multiple choice, checkboxes or drop-down options without using Floobaroo.
Edcite (Technology-enhanced question types for Math, ELA and Science)
Quizlet (Try Quizlet Live!)