Software

This is a curated list of software for satellite pass prediction and/or rig and rotor control.

Updated June 22, 2026. Updates, changes, or suggestions please email David, N9KT.

Browser-based:

  • AMSAT Online Satellite Pass Predictions
  • Heavens Above – Lots of different lists of satellites and predictions.
  • N2YO – Live real-time satellite tracking and predictions.
  • ORBIT – this is a hosted open-source browser-based app.
  • PassFinder – Nice app showing satellite passes with notifications.
  • PulseSat – Visualize satellites interactively.
  • Radio Sat Tracker – Interesting tracking app including polar plots, tables, and a very nice calendar view.
  • Satellite & Sky Tracker – Make sure to click the “Getting Started” button in the top right for info.
  • SatTrack Web – lightweight, browser-based satellite tracking solution.
  • Visible Ephemeris – High-Performance Satellite Tracking Appliance.
  • Zenith – A modern web-based satellite tracking application designed for amateur radio operators and satellite enthusiasts. Zenith provides real-time satellite tracking, pass predictions, and radio integration features.

Android:

  • Ham Satting – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, SSTV decoding, and more—all in one powerful tool.
  • ISS Detector – Full-featured. $2.99 to track all the ham satellites.
  • Look4Sat – This is the one I use! It just keeps getting better and better. Full-featured. Free.
  • ORBIT – This is a hosted open-source browser-based app.

iPhone:

  • GoSatWatch – Well recommended. $9.99
  • Ham Satting – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, SSTV decoding, and more—all in one powerful tool.
  • HamSat – A very nice satellite tracker made for hams with full-screen in-pass tracker with Doppler-corrected RX/TX dial frequencies, OSCAR/RS designations everywhere (SO-50, AO-91, RS-44 – not the launch names), Live Activity / Dynamic Island during passes, and first-class AMSAT TLE support.
  • ISS Detector – this is the one I use. It is the most full-featured one I have found. It also puts events in your calendar. $2.99 to track all the ham satellites.
  • ORBIT – this is a hosted open-source browser-based app.

Windows:

  • Ham Satting – iOS/macOS/Android/Windows/Linux – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, and more—all in one powerful tool.
  • KlaTrack – Windows/Mac/Linux – I LOVE this piece of software! It shows a nice graph where the y-axis is elevation and the x-axis is time. At a glance, you can can see when satellites are passing over and how high above the horizon they will get.
  • OscarWatch-Tracker – Desktop satellite tracking for amateur radio operators. OscarWatch shows where AMSAT spacecraft are, predicts passes over your station, works out Doppler-corrected uplink and downlink frequencies, and can drive your rotator and radio during a pass, all from one map-centred window.
  • SATPC32 – Windows – All in one app to control radios and rotors.
  • SatTrack – Windows – Feature rich application to track satellites and control rotors and radios. The “Future Pass Planner” shows the polar chart of all the future passes.
  • SkyRoof – Windows – Combines satellite tracking and SDR functions in one application.
  • Zenith – (Self-host) A modern web-based satellite tracking application designed for amateur radio operators and satellite enthusiasts. Zenith provides real-time satellite tracking, pass predictions, and radio integration features.

Mac:

  • Ham Satting – iOS/macOS/Android/Windows/Linux – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, and more—all in one powerful tool.
  • KlaTrack – Windows/Mac/Linux – I LOVE this piece of software! It shows a nice graph where the y-axis is elevation and the x-axis is time. At a glance, you can can see when satellites are passing over and how high above the horizon they will get.
  • MacDoppler – Provides any level of station automation you need from assisted Doppler Tuning and Antenna Pointing right on up to fully automated Satellite Gateway operation.
  • OscarWatch-Tracker – Desktop satellite tracking for amateur radio operators. OscarWatch shows where AMSAT spacecraft are, predicts passes over your station, works out Doppler-corrected uplink and downlink frequencies, and can drive your rotator and radio during a pass, all from one map-centred window.
  • Zenith – (Self-host) A modern web-based satellite tracking application designed for amateur radio operators and satellite enthusiasts. Zenith provides real-time satellite tracking, pass predictions, and radio integration features.

Linux:

  • Ham Satting – iOS/macOS/Android/Windows/Linux – The all-in-one, multi-platform application for amateur radio satellite tracking. Real-time visualization, pass predictions, QSO logging, and more—all in one powerful tool.
  • Gpredict – Real time satellite tracking and orbit prediction program that controls rigs and rotors using Hamlib.
  • KlaTrack – Windows/Mac/Linux – I LOVE this piece of software! It shows a nice graph where the y-axis is elevation and the x-axis is time. At a glance, you can can see when satellites are passing over and how high above the horizon they will get.
  • OscarWatch-Tracker – Desktop satellite tracking for amateur radio operators. OscarWatch shows where AMSAT spacecraft are, predicts passes over your station, works out Doppler-corrected uplink and downlink frequencies, and can drive your rotator and radio during a pass, all from one map-centred window.
  • Visible Ephemeris – Linux/Raspberry Pi – High-Performance Satellite Tracking Appliance.
  • Zenith – (Self-host) A modern web-based satellite tracking application designed for amateur radio operators and satellite enthusiasts. Zenith provides real-time satellite tracking, pass predictions, and radio integration features.

Other Platforms:

  • PaperSat – PaperSat is a fully self-contained satellite tracking application for the M5Paper S3 e-ink device. It provides real-time orbital predictions, an intuitive polar sky plot, and on-device configuration using modern AMSAT GP data — all without requiring a phone, laptop, or constant internet connection after initial setup.
  • PaperSatColor – An up-to-20-satellite next-pass dashboard for the M5Paper Color (ESP32-S3, 4″ SPECTRA 6 color e-paper, 600×400). It tracks up to twenty satellites across up to five pages of four, each shown in a 2×2 grid; each cell is a polar (azimuth/elevation) plot of that satellite’s next pass with the AOS/LOS times and azimuths and the maximum elevation.
  • CardSat – M5Stack Cardputer ADV satellite tracker + multi-radio CAT Doppler control. A self-contained, offline-first amateur-radio satellite tracker that downloads GP (orbital element) data and transponder data over WiFi, predicts passes with SGP4, and drives an Icom, Yaesu, or Kenwood radio over CAT with real-time Doppler correction – using the AMSAT “One True Rule” (constant frequency at the satellite), per-satellite calibration, an all-favorites pass schedule, an AOS alarm, sun/eclipse status, and more.

Historical Software

Over many years, a wide variety of programs have been developed for use in satellite operations.  Many of these programs are still useful, while others are of historical interest only.  To download many of these programs, as well as other information and files visit https://www.amsat.org/amsat/ftp.