This tool allows educators to create a collection of tiles with links to frequently used web resources. Good for setting up a PLE (Personal Learning Environment0. Useful for general resources or for specific projects. Can be embedded in a website for easy access.
Edmodo is a great tool - I have used it to help to flatten my classroom this year and have two different grade levels work together. I use it to post my lesson agenda with links to the resources as well as homework, assignments etc. It links to Google, you can upload files, you can conduct polls, have a schedule - it is safe, it promotes collaboration and self-support - it is brilliant.
Edmodo is also a great site to use for a class homepage. It's a good resources for students and teachers. We have Edline in our county but I think the personalization of this is better.