Best astronomy software
Apps that show the night sky, plan observations and control telescopes.
3 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All astronomy software
- Alternatives to Stellarium
Free, open-source planetarium that shows a realistic sky in 3D on your computer.
Open sourceWindows, macOS, Linux, Web - Alternatives to Celestia
Free, open-source 3D space simulator for flying through the solar system and beyond.
Open sourceWindows, macOS, Linux, iOS, Android - Alternatives to SkySafari
Paid mobile astronomy app for sky charts, telescope control and astrophotography planning.
PaidiOS, Android
Our picks by need
Best for most people
StellariumBest for a free option
CelestiaBest for open source
StellariumBest for Mac
StellariumBest for Windows
StellariumBest for Linux
StellariumBest for iPhone and Android
SkySafariCommon questions
What is the best astronomy software?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading astronomy software options right now are Stellarium, Celestia and SkySafari.
Is there free astronomy software?
Yes. Stellarium (open source) and Celestia (open source) have a free option, out of 2 free or freemium apps we track.
Which astronomy software is open source?
Stellarium and Celestia.