Google knew exactly what they were doing when they established their collaborative platform of google docs, forms, etc. But, collaboration can go much further beyond Google (I know, it pushes many of us outside of our comfort zone...)
So check out this post by Emerging Ed Tech - 20 Free Tools for Collaborative and Interactive Classroom Experiences.
http://www.emergingedtech.com/2014/05/20-excellent-free-tools-for-interactive-collaboration-experiences-in-the-classroom/
While some of these are not surprisingly on the list, there are a few gems hidden in between....
So check out this post by Emerging Ed Tech - 20 Free Tools for Collaborative and Interactive Classroom Experiences.
http://www.emergingedtech.com/2014/05/20-excellent-free-tools-for-interactive-collaboration-experiences-in-the-classroom/
While some of these are not surprisingly on the list, there are a few gems hidden in between....