Total Commander

Is it possible to add a feature (maybe via plugin) for manage cloud stores (e.g dropbox, google drive, box, sugarsync)?

Unfortunately there are now 100s of different cloud services, and each one uses its own incompatible access mechanism. Currently TC supports the standard "WebDAV", so you may choose a cloud service which supports this standard. Unfortunately they are quite rare in the English speaking Internet. You can access Dropbox via webDAV, but only via a third party service www.dropdav.com , which costs $5 per month.

You are right, there are 100s of cloud storage providers but you can start with Google Drive, Dropbox and Box.com and I think this will cover about 75% of your users...
In my opinion these are the most used cloud storage services and almost everybody has an account on them...
I think it would be very useful and apreciated.
I vote +1 for such a feature.

OK, I will consider it once TC 1.0 is out.

Google drive would be great. Just noticed ed file explorer just implemented it with latest release.
the google app is great, but it stores the downloaded files on internal card
under something like data\app\com.google...\cache\etc..

its a pain.

we can add Cloud, Picasa support, but with more features I think the application will be heavier and slow.
I suggest to try X-plore, complete and with spectacular interface, but not quick and responsive. I think a important reference to compare.