1
Also covers calendar and space · same kind of website · free
Nights on Earth lists astronomical events including meteor showers and planetary conjunctions.
Alternatives
The Best MoonCalc Alternatives in 2026
24 alternatives1 free · 1 open source
Looking for something like MoonCalc? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 1 are open source.
MoonCalc lets visitors explore lunar history with an online calendar and date controls.
Top picks at a glance
First suggestionNights on EarthNights on Earth lists astronomical events including meteor…Open source optionWebb CompareWebb Compare lets visitors compare images from the James…Another optionSunCalcSunCalc lets users examine the path of the Sun with an…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Nights on Earth | Free | Not stated | Android, Web |
| 2 | SunCalc | — | Not stated | Web |
| 3 | FirstMenOnTheMoon | — | Not stated | Web |
| 4 | Apollo Image Atlas | — | Not stated | Web |
| 5 | 100,000 Stars | — | Not stated | Web |
| 6 | Artemis II Photo Timeline | — | Not stated | iOS, Web |
| 7 | TheCMB | — | Not stated | Web |
| 8 | SpaceEngine | — | Not stated | Web |
| 9 | ExoplanetExplore | — | Not stated | Web |
| 10 | SpaceSim | — | Not stated | Web |
All MoonCalc alternatives
2
SunCalc
suncalc.orgAlso covers space · same kind of website
SunCalc lets users examine the path of the Sun with an online calendar and date controls.
3
FirstMenOnTheMoon
firstmenonthemoon.comAlso covers space · same kind of website
First Men on the Moon offers an interactive experience with audio and video about the Apollo 11 lunar landing.
4
Apollo Image Atlas
lpi.usra.edu/resources/apolloAlso covers space · same kind of website
The Apollo Image Atlas provides photographs of the Moon captured by Apollo missions, with links to NASA lunar image resources.
5
100,000 Stars
stars.chromeexperiments.comAlso covers space · same kind of website
The 100,000 Stars visualization presents nearby stars in 3D and provides controls for color and temperature.
6
Artemis II Photo Timeline
artemistimeline.comAlso covers space · same kind of website
The Artemis II Photo Timeline organizes mission photographs by date across March and April 2026.
7
TheCMB
thecmb.orgAlso covers space · same kind of website
TheCMB visualizes data from the Planck mission and provides galactic and ecliptic view controls.
8
SpaceEngine
spaceengine.orgAlso covers space · same kind of website
Explore a realistic virtual universe on a computer with SpaceEngine’s universe simulator.
9
ExoplanetExplore
exoplanetexplore.vercel.appAlso covers space · same kind of website
Exoplanet Explore visualizes exoplanet data and provides an analysis report.
10
SpaceSim
spacesim.coAlso covers space · same kind of website
Explore the Solar System, change time, and inspect worlds in this browser-based 3D space simulation.
11
Transit Finder
transit-finder.comAlso covers space · same kind of website
Transit Finder helps plan observations of the International Space Station by location, elevation, and date.
12
JPL Images
jpl.nasa.gov/imagesAlso covers space · same kind of website
NASA's Jet Propulsion Laboratory Image Gallery lets visitors browse and search space photographs and science images.
13
History
nasa.gov/historyAlso covers space · same kind of website
NASA History provides material about the agency's history, including archives and historical research resources.
14
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.
15
Ask an Astronaut
askanastronaut.issinrealtime.orgAlso covers space · same kind of website
Ask an Astronaut lets visitors search hundreds of astronaut interviews for answers to questions.
16
See A Satellite Tonight
james.darpinian.com/satellitesAlso covers space · same kind of website
See a Satellite Tonight helps visitors find when and where satellites will appear in their sky.
17
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.
18
Russian Space Web
russianspaceweb.comAlso covers space · same kind of website
Russian Space Web publishes history and news about the Russian space program.
19
NASA History
nasa.gov/history/history-publications-and-reso…Also covers space · same kind of website
The NASA History Office makes histories, chronologies, oral interviews, and other publications freely available to the public.
20
James Webb Space Telescope
science.nasa.gov/mission/webbAlso covers space · same kind of website
NASA describes the James Webb Space Telescope as an observatory studying phases throughout the history of the universe.
21
Space Atlas
spaceatlas.techAlso covers space · same kind of website
Space Atlas tracks satellites and rocket bodies on a live 3D map, with history extending from Sputnik to today.
22
Mental Landscape
mentallandscape.comAlso covers space · same kind of website
Mental Landscape collects Don P. Mitchell's work about Venus and Soviet space history.
23
Also covers space · same kind of website
NASA’s Image and Video Library combines searchable imagery and video with downloads and associated metadata.
24
Also covers space · open source
Webb Compare lets visitors compare images from the James Webb Space Telescope with earlier telescope images.
No alternatives match this filter.
Alternatives to similar tools
Images24 alternativesHistory24 alternativesFirstMenOnTheMoon24 alternativesJames Webb Space Telescope24 alternativesJPL Images24 alternativesNASA History24 alternatives
What is the best alternative to MoonCalc?
Based on features, tags and platforms, the closest alternatives to MoonCalc are Nights on Earth, SunCalc, and FirstMenOnTheMoon.
Is there a free alternative to MoonCalc?
Yes. Nights on Earth is free or offer a free plan.
Are there open-source alternatives to MoonCalc?
Yes: Webb Compare.
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