Blender is a free 3D animation studio. It includes tools for modeling, sculpting, texturing (painting, node-based shader materials, or UV mapped), UV mapping, rigging and constraints, weight painting, particle systems, simulation (fluids, physics, and soft body dynamics and an external crowd simulator), rendering, node-based compositing, and non linear video editing, as well as an integrated game engine for real-time interactive 3D, and game creation and playback with cross-platform compatibility.
Dyne:bolic GNU/Linux is a live bootable operating system equipped with a wide range of multimedia applications: editors and streamers of audio and video, 3D modelers, image processors, P2P file-sharing tools, Web browsers, an office suite, and full encryption of storage and communication. Dyne:bolic is optimized to run on old computers, runs the Linux-Libre kernel, and omits all non-free software. It can be well used without a network connection, and it comes with all the tools and libraries needed to customize the OS.
Hasciicam makes it possible to have live ASCII video on the Web. It captures video from a TV card and renders it into ASCII, formatting the output into an HTML page with a refresh tag or in a live ASCII window or in a simple text file as well, giving anyone that has a bttv card, a Linux box, and a cheap modem line the ability to show a live asciivideo feed that can be browsable without any need for a plugin, Java, etc.
The TOXTOX browser is a Mozilla-based browser for your television. Packed with features, it will provide a real multimedia experience for your bedroom or living room while its controls remain easy and accessible with a keyboard or a remote control. With built-in support for Jabber/XMPP, it will be a platform for new and innovative social and interactive media. It can be customized by installing user-contributed addons and themes.
PyMei is a Python media center application. It's designed to run as a full screen application on an HTPC, navigated by a keyboard or an LIRC input device. It plays videos or shows other types of media using external programs like mplayer. With its plugin support and themeability, it's aiming to be a very extensible and customizable media interface.
XBMC Media Center (formerly Xbox Media Center) is a multimedia player/jukebox application for Linux, Mac OS X, Windows, and Xbox. It can be used to play or view most common video, audio, and picture formats such as MPEG-1/2/4, DivX, XviD, MP3, AAC, JPG, and GIF directly from a CD or DVD in the Xbox DVD-ROM drive or from the Xbox hard drive. XBMC can also stream files over a local network or from the Internet. Playlist and slideshow functions, a weather forecast, and many audio visualizations are also included.