Below are some platforms that could be useful in a classroom setting:

classroomtools.net: for randomly grouping students (it is recommended that groups of 3 work best in terms of efficiency, learning, and interactions)

classroomscreen: it is a free digital tool that teachers can use to add design and creativity to their classrooms. With various widgets such as timers, quizzes/polls, notice boards, templates etc, it is quite useful in helping with student interaction and classroom management

Note: 

when integrating technology in the classroom, some of things that would be beneficial to keep in mind include: Understanding how to use the technology and how it benefits the lesson, Informing parents of how technology will be used, Closely monitoring students' usage during the lesson, Having a back-up plan in the case of technical difficulties

I will be updating this article as I accumulate more useful resources related to this topic, and please feel free to share more info with us in the comment section below~ Thank you!