So far we released it for AmigaOS3/4, MorphOS, AROS i386 and Windows. Later today or tomorrow we will release the OSX PPC and OSX intel builds.
If you bought the client for one OS you are free to install it on as many of your computers running the same OS.
Limitations of the beta: 1GB storage only Not syncing subfolders (initially it was planed to offer this feature only to pro-users)
What is working already: Synch folder on your computers with cloud (resulting in a local backup on all of your machines as well) Sharing public URL from Files via clipboard
What we are doing right now: Adding a web-preview for "images" so you can embed them for instance in forums like this one. (than i can ditch dropbox for my self : p ) In the moment public shared files have not the "original filename".. this will be changed soon as well.
Tommysammy provided icons and graphics for the AmigaOS4 Version.. see screenshot. Those will be offered as optional package in the indieGO-Appstore