It is the Italian Community for Ubuntu, a popular open source community operating system based upon the the Debian Linux Distribution.
Support for Synology NAS devices and ideas for future versions of the DiskStation software.
Professional online broker and trading community.
The VideoLAN project produces the extremely popular VLC media player software. Their forums provide support for users of the software as well as the development community.
OpenOffice.org offers a free and fully-featured office suite which meets the needs of the common consumer all the way up to large enterprises.
Joomla is one of the leading open-source Content Management Systems. With a userbase of over 400,000, they use phpBB as a reliable platform for support.