BoxCryptor is a cryptographic virtual harddisk that encrypts all data on-the-fly using the AES-256 standard. Encrypted data is stored in an arbitrary directory of your choice, e.g. one that is synced to the cloud like your Dropbox folder.
"They make it simple. We make it secure. Encrypt your files before they sync to Dropbox®, Box®, Google Drive™, OneDrive® or any other folder on your devices."
ownCloud gives you universal access to your files through a web interface or WebDAV. It also provides a platform to easily view & sync your contacts, calendars and bookmarks across all your devices and enables basic editing right on the web.
Store all of your content in the cloud
Free your files from aging devices and never worry about losing anything again. Enjoy 10GB of online storage for free!