[Shahryar_NEO]

Mapping Tools

Nasa World Wind

Mapping tool similar to Google Earth for Windows. Must have the .NET Framework installed.
Download Page

Stars and Outer Space

Celestia

Open-source 3D planetarium software. Akin to traveling through space (outer space).
Download Page
Stellarium

"Renders realistic skys in realtime." See what you would see if your city wasn't so light-polluted. Used in real planetariums.
Download Page
Also see: macORSA - Orbit Reconstruction, Simulation, and Analysis

Open Source games !!! :

Games

Marathon: Aleph One

Engine for Bungie's free FPS series Marathon. Play online, solo play with rich original story, many total conversions and thousands of maps.
Download Page
Zombies

3D zombie strategy game.
Download Page
Armagetron Advanced

3D Tron game.
Download Page
BZFlag

First-person tank game.
Download Page
Battle for Wesnoth

Fantasy / Strategy Game
Download Page
Also see: Snes9X (SNES emulator), Frozen Bubble



Free File Hosting

CC Publisher

Host Creative Commons video or audio files for free on archive.org with this easy uploader.
Download Page