G-Predict
- Free, real-time satellite tracking and orbit prediction software.
- http://groundstation.sourceforge.net/gpredict/

LogSat
- Advanced software, with features including antenna radiation maps for optimal satellite coverage.
- http://www.logsat.com/

Safety Track
- Global Positioning System for law enforcement, private and commercial users to track vehicles. Complete information, plus a demo.
- http://www.safetytrack.net/

Orbitron - Satellite Tracking System
- Shows positions of satellites at any given moment in real or simulated time. Free download (Cardware). [multi-language]
- http://www.stoff.pl

Clarke Belt Calculator
- Given a file with satellites' Two-Line Element (TLE) you can calculate a list with the azimuth, elevation and range for any point on earth.
- http://www.golombek.com/sat/

Southern Africa Amateur Radio Satellite Association
- Resource includes visual and RF satellite contact schedules. [English]
- http://www.amsatsa.org.za

Project Oscar
- International amateur satellite organization - web site contains info about amateur satellites, operating information, status of individual satellites and an online tracking application.
- http://www.projectoscar.net

Amateur Radio Satellite Tracking 2003
- Portal site listing a wide variety of information related to satellite tracking, including satellite list and news.
- http://www.qsl.net/kg4ceo/

Satellite Frequency Guide
- A tabular guide to amateur radio satellite frequencies.
- http://www.n1rwy.com/satellite/freqguide.html

SatScape
- Windows tracking software; features include 3D maps and can track several hundred satellites simultaneously.
- http://www.satscape.co.uk

MSFC: Real-time Satellite Tracking
- Two-dimensional and three-dimensional applets showing the positions of over 700 satellites. Also includes a sighting guide and public-use images of the whereabouts of several popular satellites.
- http://liftoff.msfc.nasa.gov/toc.asp?s=Tracking

CelesTrak
- Keplerian elements for most satellites in low-earth orbit. Also includes historical archives dating back to 1980 and information about satellite tracking.
- http://www.celestrak.com/

Real-time ISS Shuttle Data
- NASA information on the International Space Station's whereabouts, Keplerian elements for the ISS and Shuttle, and sighting prediction information.
- http://spaceflight.nasa.gov/realdata/index.html

SatSignal & WXtrack
- Satellite tracking and decoding software, including WXtrack, WXtrackGL, SatSignal, GeoSatSignal, and the HRPT Reader is available for download.
- http://www.david-taylor.myby.co.uk/software/wxsat.htm

Timestep Weather Satellite Systems
- Hardware/software products to receive data from weather satellites, for the amateur radio enthusiast
- http://www.time-step.com/

UK Satellite Feeds
- Satellite feeds, listings, and free channels across Europe.
- http://www.dxers.co.uk/

AMSAT
- Information regarding amateur radio satellite communications. Also available are Keplerian elements in several formats, updated weekly.
- http://www.amsat.org/

Satellite Index Project
- Graphical and real-time information on satellite locations.
- http://www.roestmann.com/

Heavens Above
- Real-time satellite, ISS, and Space Shuttle orbital pass information, maps, star and charts.
- http://www.heavens-above.com/

P3D Article by KA0SNL
- Discusses main design goal of making satellite operations less complex and less expensive for operator on the ground. Includes photographs.
- http://www.amsat.org/amsat/features/ka0snl/p3d1.html

AO-10
- Information about AO-10, including status updates on a periodic basis.
- http://www.cstone.net/~w4sm/AO-10.html

Satellite Tracking Prediction Form
- Satellite tracking pass predictions includes by state listings, and related resources.
- http://www.bester.com/satpasses.html

WinOrbit Home Page
- Free satellite tracking software for Windows 3.x.
- http://www.sat-net.com/winorbit/