Are drivers available for all major platforms?
OS edition (and drivers) is available for Windows and MacOS X.
Linux and FreeBSD versions are in permanent beta state.
Mobile devices unfortunately don't have any transparent way to plug a redirector or something similar to their filesystem. Now obsolete Windows Mobile lets you create a virtual storage card and we have such experience (and we can deliver a solution for you). Stock Android kernel is compiled without FUSE and adding anything to kernel is not possible without building a custom version of Android. iOS, Blackberry OS 6/7 and other operating systems are even more limited and restricting in this aspect.