I liked this app because it was an easy way for parents and teachers to interact. This app tracks students behavior and progress and allows parents to contact teachers and get an immediate response. Plus its free!
This is a website that elementary school teachers can go to and create a classroom website. It costs $29 for the year but the website literally becomes your own, URL and all. You can design the website anyway you would like and then you just share the URL with your students and teachers and they can access what you are learning from their home.