Create a wide variety of digital worksheets and quizzes with automatic scoring. Digital worksheets can have matching exercises, drag-and-drop answering, constructed response, etc. You can also embed YouTube videos into worksheets to make listening cloze or self-study units. 

Approximately as time-intensive as other LMS like Google classroom. You have to set up classes and invite students to join, then group worksheets into workbooks (folders) and assign to classes. You can use a wide variety of publicly shared worksheets, but you still have to edit them because they use European spelling and collocations/phrases.

More convenient and interactive alternative to Jeopardy-style PPT games. Students can use devices as game buzzer to answer questions, so game management with individuals or smaller teams becomes easier and more exciting.

Great all-purpose tool to make a variety of online practice activities. Teachers can import a Google spreadsheet of items (questions and answers) and turn them into any sort of game or worksheet. Quickly turn content into Quizlet-style flashcards, crossword puzzles, Jeopardy games, word searches, etc.