I have a situation where I have users who need access to general files
stored on the server, but they're rarely ever in the office. I am pretty
sure that one of the three (iFolder, NetDrive, NetStorage) will accomplish
what I need, but I just am not sure which I want.

I would prefer a solution that doesn't require any sort of installation
(thus I'm a little skeptical of iFolder and NetDrive, though I'm a little
less skeptical of NetDrive).

Any suggestions? Thanks.