A variety of options and/or software functions for collaborating on research projects are available in a range of programs listed on this site. See the "compare" section in the list above for possibilities to consider. Or, look at the online help or manuals that come with the programs. Or do a Google search, for example, using the name of the software as one search term and "collaborat* as your second search term.
Open Science Framework: this resource may be represented elsewhere on this web site soon. It is developing. A source for collaborating in science.