What are some alternatives?
When comparing Cloudu and Filestash, you can also consider the following products
FlowCloud - FlowCloud is online cloud storage GET 120GB FREE!
Dropbox - Online Sync and File Sharing
Google Drive - Access and sync your files anywhere
Syncany - Syncany is an open-source cloud storage and filesharing application.
Mega - Secure File Storage and collaboration
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.