1
MoonCalc
mooncalc.orgAlso covers space · same kind of website
MoonCalc lets visitors explore lunar history with an online calendar and date controls.
Alternatives
The Best SunCalc Alternatives in 2026
24 alternatives2 free · 0 open source
Looking for something like SunCalc? 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.
SunCalc lets users examine the path of the Sun with an online calendar and date controls.
Top picks at a glance
First suggestionMoonCalcMoonCalc lets visitors explore lunar history with an online…Free or freemium optionNights on EarthNights on Earth lists astronomical events including meteor…Another option100,000 StarsThe 100,000 Stars visualization presents nearby stars in 3D…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | MoonCalc | — | Not stated | Web |
| 2 | 100,000 Stars | — | Not stated | Web |
| 3 | Artemis II Photo Timeline | — | Not stated | iOS, Web |
| 4 | TheCMB | — | Not stated | Web |
| 5 | Transit Finder | — | Not stated | Web |
| 6 | Images | — | Not stated | Web |
| 7 | History | — | Not stated | Web |
| 8 | Nights on Earth | Free | Not stated | Android, Web |
| 9 | Sen | — | Not stated | Web |
| 10 | Russian Space Web | — | Not stated | Web |
All SunCalc alternatives
2
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.
3
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.
4
TheCMB
thecmb.orgAlso covers space · same kind of website
TheCMB visualizes data from the Planck mission and provides galactic and ecliptic view controls.
5
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.
6
Also covers space · same kind of website
NASA’s Image and Video Library combines searchable imagery and video with downloads and associated metadata.
7
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.
8
Also covers space · same kind of website · free
Nights on Earth lists astronomical events including meteor showers and planetary conjunctions.
9
Sen
sen.comAlso covers space · same kind of website
Sen provides live 4K video views of Earth captured by its satellites in space.
10
Russian Space Web
russianspaceweb.comAlso covers space · same kind of website
Russian Space Web publishes history and news about the Russian space program.
11
Also covers space · same kind of website · free
NASA e-Books provides a catalog of electronic books published by the space agency.
12
NASA's Eyes
science.nasa.gov/eyesAlso covers space · same kind of website
NASA's Eyes offers browser-based three-dimensional visualizations for exploring NASA data and imagery.
13
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.
14
SpaceFromSpace
spacefromspace.comAlso covers space · same kind of website
SpaceFromSpace archives declassified Cold War satellite imagery and modern spaceport photographs on interactive maps.
15
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.
16
Documents
ntrs.nasa.gov/searchAlso covers space · same kind of website
NASA Technical Reports Server lets users search NASA technical reports and browse its collections.
17
Apollo in Realtime
apolloinrealtime.orgAlso covers space · same kind of website
Apollo in Realtime presents an interactive journey through the Apollo missions.
18
ESA
esa.intAlso covers space · same kind of website
The European Space Agency portal shares current news, strategy, and information about its programs.
19
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.
20
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.
21
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.
22
Audio
nasa.gov/audio-and-ringtonesAlso covers space · same kind of website
NASA Sounds and Ringtones features audio clips and ringtones from the agency's online audio collection.
23
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.
24
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.
No alternatives match this filter.
Alternatives to similar tools
Images24 alternativesHistory24 alternativesAudio24 alternativesDocuments24 alternativesFirstMenOnTheMoon24 alternativesJames Webb Space Telescope24 alternatives
What is the best alternative to SunCalc?
Based on features, tags and platforms, the closest alternatives to SunCalc are MoonCalc, 100,000 Stars, and Artemis II Photo Timeline.
Is there a free alternative to SunCalc?
Yes. Nights on Earth and NASA Ebooks are free or offer a free plan.
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