Smitten differs from traditional media centres in three major ways. It contains no media playback at all, which makes it very small (and suitable for porting to embedded systems) and quick to initialize. It targets a TV display and interface, which means there's less information on any particular screen, and a much simpler control interface consisting of left, right, up, down, and select. No mouse is required. It is also highly skinnable, and cross-platform to most systems. Essentially, it provides an easy-to-use menu system that allows the user to navigate a hierarchy of files, and view them using an (external) tool.
Coherence is a set of DLNA/UPnP devices, like MediaServer and MediaRenderer. In addition, it includes a well-designed framework to extend other applications with DLNA/UPnP functionality. It also has an emerging DBus API, enabling these applications to participate in digital living networks. It supports Playstation 3 (PS3), XBox, and many other devices.
The MediaMVP Media Center (mvpmc) is a media player written in C. It currently runs on the Hauppauge MediaMVP hardware. It can play video (including live TV), audio (including live radio), show pictures, and retrieve Yahoo! weather. mvpmc can access media from a MythTV, ReplayTV, Hauppauge, VLC, or SqueezeCenter (aka SlimServer) server. It can also access media via UPNP, HTTP, NFS, and CIFS. There is a VNC viewer built in. It understands MPEG1 and MPEG2 video, MP3, OGG, WAV, AC3, and FLAC audio and JPG, BMP, and PNG images.
CDnavigator is an application that files your CDs and DVDs in a database. It also deposits information about photos (JPEG), music (MP3), and films stored in such media. You can also store other metadata such as notes and ratings. You can search over all items and save the choices. CDnavigator supports an automatic cache that saves the most frequently used data on hard disk. Photos can be viewed directly in the application. It can download new photos from a camera, sort them into albums, and prepare them for burning on CD.
GMediaRender is a UPnP media renderer for POSIX-compliant systems, such as GNU/Linux or UNIX. It implements the server component that provides UPnP controllers a means to render media content (audio, video, and images) from a UPnP media server. Content rendering is done using the GStreamer framework, providing rendering support for the media formats supported by this framework.
SteGUI is a graphical front-end to Steghide that lets users view the images (in Bitmap and JPEG format) and play the sounds (in Wave and AU format) that Steghide allows as cover files. SteGUI also contains a simple text editor to manage text payload files (although any kind of file can be a payload to hide). The idea is to allow users to manage the supported file types and use Steghide from a single graphical tool.