CodePlex.SpaceBlock is a front end for various Windows online storages. As for now, there are various online storages for Windows. Although they may not satisfied for enterprise use, most of them are free of charge and provide sufficient disk space for personal use.
An online storage manager available for various services
As for an online storage service, different from other web applications, it should have a feature to collaborate with dedicated clients and file managers. Those who use several online storage services, CodePlex.SpaceBlock is useful.
