Google Drive/Dropbox like solutions with Offline access and local security and Cross Platform

Question

Are there any software solutions or SDKs parts that handle the following:

• Propose something like google docs or dropbox, with secured storage for enterprise
• Documents are stored for offline access
• Documents are encrypted
• Solution work on iOS, Android and if possible Windows / Mac OS

I know that google docs will propose offline access and distribute an application on IPad but I would like to know if there are alternatives ?

Thank you

Regards

Answer 1

See Nomadesk offerings - they do exactly what you need.

Answer 2

Amazon has this http://aws.amazon.com/s3/ wich has a great API.

Answer 3

You can try one of the following cloud services:

1. Cubby
2. Microsoft SkyDive
3. Wuala
4. Sugarsync