LiveBinder - Organize resources (photos, videos, files, weblinks, etc) in an online "binder" and share with one handy link. 

With Symbaloo, one can organize all of the web links used in an entire unit or semester-long course.  Great for visual learners because links are represented by tile/images.  

Use fur.ly to direct students to resources on the web. It is quick, free, easy to use and no sign up is required. It allows the user to shorten multiple URLs into one convenient link.