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astrotermStellarium
Free

Free and open source under the MIT license.

 Free

Free and open source under the GPL 2.0, funded by donations and sponsorship.

Command line Windows, macOS, Linux, Android, iOS
  • Explores sky views at different dates, times, and locations
  • Shows stars, planets, moon phases, and constellations
  • Accurate sky for any location, date and time
  • Simulates the view through binoculars, telescopes and specific eyepieces
  • Displays the sky using terminal graphics.
  • The three-dimensional rendering needs a reasonable graphics card
  • Default catalogues are limited until you download the extra ones
Downloadable app Downloadable app
Open source Open source
License: MIT License: GPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 8, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.