1
Solar System Scope
solarsystemscope.comAlso covers space · same kind of website
Solar System Scope provides an online 3D simulation of the Solar System and night sky.
Alternatives
The Best SpaceSim Alternatives in 2026
24 alternatives2 free · 2 open source
Looking for something like SpaceSim? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 2 are free or have a free plan and 2 are open source.
Explore the Solar System, change time, and inspect worlds in this browser-based 3D space simulation.
Top picks at a glance
First suggestionSolar System ScopeSolar System Scope provides an online 3D simulation of the…Free or freemium optionOrbiterOrbiter simulates spaceflight using Newtonian mechanics…Open source optionAndroidCelestiaCelestia for Android is a real-time space simulator for…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Solar System Scope | — | Not stated | Android, iOS, Web |
| 2 | AndroidCelestia | — | Yes | Android |
| 3 | Atlas of Space | — | Not stated | Web |
| 4 | Space Time | — | Not stated | Web |
| 5 | 1 Pixel moon | — | Not stated | Web |
| 6 | Solar System | — | Not stated | Web |
| 7 | SDO Dashboard | — | Not stated | Web |
| 8 | ISS In Realtime | — | Not stated | Web |
| 9 | SpaceEngine | — | Not stated | Web |
| 10 | ExoplanetExplore | — | Not stated | Web |
All SpaceSim alternatives
2
Also covers space · open source
Celestia for Android is a real-time space simulator for exploring the solar system on an Android device.
3
Atlas of Space
atlasof.spaceAlso covers space · same kind of website
Atlas of Space interactively explores planets, moons, asteroids, and other objects in the Solar System.
4
Space Time
space.pointdynamics.comAlso covers space · same kind of website
A browser-based 3D universe explorer combines the solar system, stars, deep-sky objects, satellites, and galaxies.
5
1 Pixel moon
joshworth.com/dev/pixelspace/pixelspace_solars…Also covers space · same kind of website
If the Moon Were Only 1 Pixel maps solar system objects in a scale model that begins with a one-pixel Moon.
6
Solar System
eyes.nasa.gov/apps/solar-systemAlso covers space · same kind of website
Eyes on the Solar System offers a three-dimensional view for exploring the solar system and past and future missions.
7
SDO Dashboard
sdo.gsfc.nasa.gov/data/dashboardAlso covers space · same kind of website
The Solar Dynamics Observatory dashboard supports study of the Sun's influence on Earth and near-Earth space.
8
ISS In Realtime
issinrealtime.orgAlso covers space · same kind of website
The ISS in Real Time page is titled as a live International Space Station tracking resource.
9
SpaceEngine
spaceengine.orgAlso covers space · same kind of website
Explore a realistic virtual universe on a computer with SpaceEngine’s universe simulator.
10
ExoplanetExplore
exoplanetexplore.vercel.appAlso covers space · same kind of website
Exoplanet Explore visualizes exoplanet data and provides an analysis report.
11
MoonCalc
mooncalc.orgAlso covers space · same kind of website
MoonCalc lets visitors explore lunar history with an online calendar and date controls.
12
Aladin
aladin.cds.unistra.frAlso covers space · same kind of website
Users can explore the sky with Aladin Desktop or its interactive Aladin Lite atlas.
13
Also covers space · open source · free
Orbiter simulates spaceflight using Newtonian mechanics, with the solar system and its major bodies as its setting.
14
Satellite Map
satellitemap.spaceAlso covers space · same kind of website
Satellite Map tracks satellites in real time on an interactive 3D map.
15
KeepTrack
keeptrack.spaceAlso covers space · same kind of website
KeepTrack tracks more than 37,000 satellites in real time and provides user profiles and achievements.
16
Visible Earth
visibleearth.nasa.govAlso covers space · same kind of website
NASA's Earth Observatory publishes images, stories, and discoveries about the environment, Earth systems, and climate.
17
Track The Sky
trackthesky.comAlso covers space · same kind of website
Track The Sky tracks more than 9,000 satellites in real time on an interactive map.
18
SpaceWeather
spaceweather.comAlso covers space · same kind of website
SpaceWeather.com reports solar wind and flare data, with news about meteor showers, auroras, and near-Earth asteroids.
19
Live Meteors
livemeteors.comAlso covers space · same kind of website
Live Meteors lets visitors listen to meteor radio pings and explains how the system works.
20
Sen
sen.comAlso covers space · same kind of website
Sen provides live 4K video views of Earth captured by its satellites in space.
21
Russian Space Web
russianspaceweb.comAlso covers space · same kind of website
Russian Space Web publishes history and news about the Russian space program.
22
Also covers space · same kind of website · free
NASA e-Books provides a catalog of electronic books published by the space agency.
23
JPL Photojournal
photojournal.jpl.nasa.govAlso covers space · same kind of website
NASA Photojournal provides space and mission images, animations, and videos, with topic-based browsing and search.
24
ESA
esa.intAlso covers space · same kind of website
The European Space Agency portal shares current news, strategy, and information about its programs.
No alternatives match this filter.
Alternatives to similar tools
Visible Earth24 alternativesNASA Ebooks24 alternativesJPL Photojournal24 alternativesSolar System24 alternativesSen24 alternativesESA24 alternatives
What is the best alternative to SpaceSim?
Based on features, tags and platforms, the closest alternatives to SpaceSim are Solar System Scope, AndroidCelestia, and Atlas of Space.
Is there a free alternative to SpaceSim?
Yes. Orbiter and NASA Ebooks are free or offer a free plan.
Are there open-source alternatives to SpaceSim?
Yes: AndroidCelestia and Orbiter.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative