Trandori is a rather interesting Kickstarter campaign for educators that introduces a new kind of search engine for interactive educational problems. All search results are generated from user created content and it combines the best features of a LMS and CMS. This is an ideal resource for self paced learning.
Below is a brief demo video...
I highly recommend checking out Trandori by clicking here!!!
For a more detailed review check out Edshelf.
For my Pinterest board on Educational Search Engines click here.