Best OpenSpace Alternatives in 2026
Updated
20 apps from astronomy apps ranked against OpenSpace on the same published basis.
- 1OpenSpace vs NASA Eyes
- 2OpenSpace vs Solar System Scope
- 3OpenSpace vs Celestia
- 4OpenSpace vs Cosmic Watch
- 5OpenSpace vs Night Sky
- 6OpenSpace vs Star Chart
- 7OpenSpace vs DWARFLAB App
- 8OpenSpace vs Seestar App
- 9OpenSpace vs squishyplanet
- 10OpenSpace vs BXA
- 11OpenSpace vs UNISTELLAR App
- 12OpenSpace vs Luminos Pro
- 13OpenSpace vs SkySafari
- 14OpenSpace vs Halotools
- 15OpenSpace vs Star Chart
- 16OpenSpace vs Gaia Sky
- 17OpenSpace vs Aladin Desktop
- 18OpenSpace vs Heavens-Above
- 19OpenSpace vs KStars
- 20OpenSpace vs Singularity
OpenSpace alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | NASA Eyes | 7.5 | Free plan | Free | Android, iOS, Linux, Mac, Web, Windows |
| 2 | Solar System Scope | 7.5 | Free plan | Free | Android, iOS, Mac, Web, Windows |
| 3 | Celestia | 7.4 | Free plan | Free | Android, iOS, Linux, Mac, Web, Windows |
| 4 | Cosmic Watch | 7.3 | Free plan | $0.42/mo | Android, iOS, Mac |
| 5 | Night Sky | 7.2 | Free plan | Free | Android, iOS, Mac |
| 6 | Star Chart | 7.2 | Free plan | Free | Android, iOS, Mac, Windows |
| 7 | DWARFLAB App | 7.0 | Free plan | Free | Android, iOS |
| 8 | Seestar App | 6.8 | No | — | Android, iOS, Mac, Windows |
| 9 | squishyplanet | 6.8 | Free plan | Free | Linux, Windows |
| 10 | BXA | 6.7 | Free plan | Free | Linux |
| 11 | UNISTELLAR App | 6.6 | No | — | Android, iOS |
| 12 | Luminos Pro | 6.5 | No | $3/mo | iOS, Mac |
| 13 | SkySafari | 6.4 | No | — | Android, iOS, Mac, Web |
| 14 | Halotools | 6.1 | No | — | Linux |
| 15 | Star Chart | 6.1 | No | — | Windows, Mac, iOS, Android |
| 16 | Gaia Sky | 6.0 | No | — | Windows, Mac, Linux |
| 17 | Aladin Desktop | 5.9 | No | — | Windows, Mac, Linux |
| 18 | Heavens-Above | 5.9 | No | — | Web, iOS, Android |
| 19 | KStars | 5.9 | No | — | Windows, Mac, Linux |
| 20 | Singularity | 5.9 | No | — | iOS, Android |
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Questions about OpenSpace alternatives
What is the best alternative to OpenSpace?
NASA Eyes, number 1 in astronomy apps with a score of 7.5 out of 10. The others here: Solar System Scope, Celestia, Cosmic Watch and 16 more.
What is the best free alternative to OpenSpace?
NASA Eyes is the best-ranked alternative with a free plan. 9 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.