5. Slack
Next in line on our list of best productivity tools for teachers is Slack. Again, the initial use of this app is for business and people who work in a team, but if you are the right teacher, you will regard your students as such. Here is an article on how to successfully use it in your classroom, as it serves to connect people who work together on the same projects. Everyone can make their contributions, connect with hashtags and @mentions. I am sure your students will love it!