ownCloud is a free software alternative to some proprietary web services and it currently includes file management (with built-in file sharing), music streaming, calendar, contacts and more - all running on your computer or server.. ownCloud 2 was released a few days ago and comes with many cool new features: WebDAV support so you can access your files through filemanagers like Nautilus or Dolphin
![ownCloud: Your Personal Cloud Server](https://cdn-ak-scissors.b.st-hatena.com/image/square/d20388bb991e9afe14a54e674b0272cce7af30ac/height=288;version=1;width=512/https%3A%2F%2Flh4.googleusercontent.com%2F-yeWBMq4QR-Y%2FTp1xi9zHGrI%2FAAAAAAAAGVg%2FP42KMBaYA_A%2Fw1200-h630-p-k-no-nu%2Fowncloud_files.png)