Owncloud

ownCloud is a free software alternative to proprietary web services such a Dropbox, Google Calendar and more. You can install it on your computer or web server and access (and share) your files from any OS, since ownCloud comes with desktop clients for Windows, Mac OSX and Linux as well as mobile clients for Android and iOS.

A new ownCloud version has been released - 5 -

New features and improvements in ownCloud 5:

• new design;
• option to restore deleted files;
• new search engine which includes a new Lucene-based full text search engine app;
• ownCloud now uses Clam antivirus to prevent distributing infected files;
• rewritten photo gallery;
• improved contacts, calendar, bookmarks, app management, versioning and file cache (up to 500% faster);
• faster sync for the desktop client;
• better security;
• enhanced external storage app;
• new documentation;
• many other changes.

For a complete list of changes, see THIS page.

Also, in an update that should be available in April, ownCloud will get a newly designed server-side encryption application.

With this version, I was finally able to connect my Dropbox account to ownCloud (it has never worked for me in the previous releases for some reason):

However, after doing this, ownCloud became very slow while it synced my Dropbox files. By the way, besides Dropbox, ownCloud also supports other external storages such as Amazon S3, Google Drive, FTP, OpenStack Swift, SMB / CIFS, WebDavv and SFTP.