1
Also covers space · open source
This project demonstrates real-time three-dimensional satellite visualization in a browser using SGP4GL, CesiumJS, and Next.js.
Alternatives
The Best SGP4 Alternatives in 2026
24 alternatives2 free · 3 open source
Looking for something like SGP4? 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 3 are open source.
SGP4.gl provides a GPU-accelerated three-dimensional satellite visualization using SGP4, CesiumJS, and Next.js.
Top picks at a glance
First suggestionSgp4gl DemoThis project demonstrates real-time three-dimensional…Free or freemium optionNights on EarthNights on Earth lists astronomical events including meteor…Another optionNASA's EyesNASA's Eyes offers browser-based three-dimensional…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Sgp4gl Demo | — | Yes | — |
| 2 | NASA's Eyes | — | Not stated | Web |
| 3 | Solar System | — | Not stated | Web |
| 4 | Planet Globe | — | Not stated | Web |
| 5 | nextrocket.space | — | Not stated | Web |
| 6 | Next Spaceflight | — | Not stated | Android, iOS, Web |
| 7 | 100,000 Stars | — | Not stated | Web |
| 8 | SpaceFromSpace | — | Not stated | Web |
| 9 | Satellite Map | — | Not stated | iOS, Web |
| 10 | GOES-16 Satellite Imagery | — | Not stated | Web |
All SGP4 alternatives
2
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.
3
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.
4
Planet Globe
nbremer.github.io/planet-globeAlso covers space · same kind of website
Planet presents satellite imagery of Earth, including a visualization of images captured across a single day.
5
nextrocket.space
nextrocket.spaceAlso covers space · same kind of website
Next Rocket lists upcoming rocket launches with launch times, vehicles, providers, payloads, and destinations.
6
Next Spaceflight
nextspaceflight.comAlso covers space · same kind of website
Next Spaceflight lists upcoming launches and provides schedule details such as launch sites, vehicles, and payloads.
7
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.
8
SpaceFromSpace
spacefromspace.comAlso covers space · same kind of website
SpaceFromSpace archives declassified Cold War satellite imagery and modern spaceport photographs on interactive maps.
9
Satellite Map
satellitemap.spaceAlso covers space · same kind of website
Satellite Map tracks satellites in real time on an interactive 3D map.
10
GOES-16 Satellite Imagery
rammb-slider.cira.colostate.eduAlso covers space · same kind of website
The SLIDER explorer displays satellite imagery from GOES-16 and Himawari-8 with interactive playback and overlays.
11
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.
12
CelesTrack
celestrak.orgAlso covers space · same kind of website
CelesTrak is a nonprofit organization with a mission related to space and satellite information.
13
EarthData
worldview.earthdata.nasa.govAlso covers space · same kind of website
NASA Worldview provides an interactive interface for browsing full-resolution daily satellite images from around the globe.
14
Also covers space · same kind of website
NASA’s Image and Video Library combines searchable imagery and video with downloads and associated metadata.
15
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.
16
Also covers space · open source
Keeptrack.space visualizes satellite data and tracking sensors in 3D for users exploring astrodynamics.
17
Also covers space · open source
Look4Sat provides an Android satellite tracker and pass predictor, with information sourced from Celestrak.
18
Also covers space · same kind of website · free
Nights on Earth lists astronomical events including meteor showers and planetary conjunctions.
19
Sen
sen.comAlso covers space · same kind of website
Sen provides live 4K video views of Earth captured by its satellites in space.
20
Russian Space Web
russianspaceweb.comAlso covers space · same kind of website
Russian Space Web publishes history and news about the Russian space program.
21
Also covers space · same kind of website · free
NASA e-Books provides a catalog of electronic books published by the space agency.
22
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.
23
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.
24
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.
No alternatives match this filter.
Alternatives to similar tools
Images24 alternativesHistory24 alternativesDocuments24 alternativesEarthData24 alternativesVisible Earth24 alternativesNASA Ebooks24 alternatives
What is the best alternative to SGP4?
Based on features, tags and platforms, the closest alternatives to SGP4 are Sgp4gl Demo, NASA's Eyes, and Solar System.
Is there a free alternative to SGP4?
Yes. Nights on Earth and NASA Ebooks are free or offer a free plan.
Are there open-source alternatives to SGP4?
Yes: Sgp4gl Demo, Keeptrack.space, and Look4Sat.
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