DriveHQ alternatives

DriveHQ
Store, access and share files online from anywhere at anytime. Includes explorer-like web interface and the state-of-the-art FileManager 4.0. Supports any browsers on PC/Mac. Supports group/sub-group file sharing with read-write access.
DriveHQ alternatives are:
DropBox, SugarSync, Box, Egnyte, Carbonite