Google Forms: Create your own quizzes - short, long, formal, informal - have students respond in a variety of formats. Then, let forms create data charts within the form or export the results to a Google Sheet. The possibilities are endless.
Formative: This site allows teachers to create any content or questions for students to respond to within the site. Teachers get results loaded on their page automatically so you can check student progress live. You can tag standards as well!
Quizizz: Create your own content or search already created content and then assign it to your students. You can align the questions to standards and then download your results into sheets.
Quizlet Live: The old form of Quizlet updated to include live games that students can play in teams as a class. Create your own content or choose from sets that already exist.
Kahoot!: This game-based formative assessment allows students to participate on their device by choosing the correct shape that corresponds with the answer on the screen. Create your own material or search the site for content to use.