Orbitron - Satellite Tracking System
Recreation, Radio, Amateur, Satellite Tracking - Orbitron - Satellite Tracking System. Shows positions of satellites at any given moment in real or simulated time.
http://www.stoff.pl
Northern Lights Software Associates
Recreation, Radio, Amateur, Satellite Tracking - Northern Lights Software Associates. Nova for Windows tracks an unlimited number of satellites in real time.
http://www.nlsa.com/
Heavens-Above Home Page
Recreation, Radio, Amateur, Satellite Tracking - Heavens Above. Real-time satellite, ISS, and Space Shuttle orbital pass information, maps, star and charts.
https://www.heavens-above.com/main.aspx