GroupMe is a free messaging app that can be used to communicate with your students as well as with other teachers. This program allows you to group your students into classes, project groups, grade levels, or whatever works best for you. You can even send direct messages to your students or they can message you if they need help with an assignment. GroupMe is available on every device including IOS, Android, Windows, Mac, and can even be used over SMS on any non-smartphone.