Stixy

Found something that suited the needs of one of my non-profits better than Google docs: Stixy, a free service with the only limitation: don’t upload anything bigger than 50 Mb.

Stixy does not allow to edit documents online, but it also does not alter your documents during conversion to a proprietary format like Google. You can also share images, notes, and to-do lists, and the interface is self-explanatory.