HEATKEYS

Gpredict: Free, real-time satellite tracking and orbit prediction software for Linux, Mac OS X and Windows

AMSAT is a worldwide group of Amateur Radio Operators who share an active interest in building, launching and then communicating with each other through non-commercial Amateur Radio satellites. AMSAT designs, constructs and successfully launches comm...

DX Zone directory with 15000 Amateur Radio links, about Ham-Radio radio scanning, cb radio and shortwave listening, antenna homebrew projects and a complete radio software collection. Include a free classified ads, ham radio reviews and operators di...

Visual Satellite Observer

Nova for Windows is an innovative real-time satellite tracking program. Nova includes realistic maps, unlimited satellites, observers, views, plus auto-tracking of antennas.

AGI provides COTS software to national security and space professionals for integrated analyses and visualization of land, sea, air, and space assets. Application areas include battlespace management, geospatial intelligence, space operations, and m...

Help build the most comprehensive human-reviewed directory of the web

Only freeware - for Win 95/98/ME/XP/Vista/Win 7. No shareware. Large selection organized by category.

Reviews and free software downloads for Windows, Mac, Palm, Pocket PC, and Mobile Phones. The best programs and games. Buy software directly online.