Competitive market research

Looking to build a 'web office' for freelancers, one that will have seven features that freelances and work from home people can have some of the benefits of an 'office', this being a virtual office to visit and use.

Would like someone to look at the feature list, and compile a list of the closest competitors so that I can build wisely, the feature list to be provided on award (which we will have an NDA in place). Should be a 4-6 hour job, just web research.

I have done my study, so this is to verify (or not) what I have found, and I believe this site will be complementary, not competitive, but would like a second research done.