100 Best Space Tech Apps for Tracking, Planning, and Exploring Space
Space software spans consumer sky guides, satellite trackers, mission-design tools, and platforms for analyzing Earth data. This first group covers 25 established options for founders, researchers, operators, and curious observers.
Stellarium
Stellarium displays a realistic interactive night sky with stars, planets, constellations, and telescope controls. It helps observers identify celestial objects without manually matching unfamiliar star patterns to printed charts.
SkySafari
SkySafari provides detailed sky maps, astronomical object databases, observing tools, and telescope-control integrations. It helps astronomers plan targeted observing sessions by organizing objects, visibility details, and equipment control.
NASA Eyes
NASA Eyes visualizes NASA missions, spacecraft, planets, and Earth data in interactive three-dimensional environments. It makes complex mission locations and planetary datasets easier to explore than static agency pages.
NASA App
The NASA App delivers agency news, mission updates, images, videos, podcasts, and live programming. It gives space enthusiasts one mobile destination for following NASA activity across many programs.
Heavens-Above
Heavens-Above predicts visible passes of satellites, the International Space Station, and other objects. It helps skywatchers avoid missing brief overhead passes by providing location-specific viewing times.
Flight Club
Flight Club visualizes launch trajectories and spacecraft flights using interactive three-dimensional mission simulations. It helps launch followers understand where rockets travel instead of interpreting technical trajectory diagrams.
Star Walk 2
Star Walk 2 uses an interactive sky map to identify stars, planets, satellites, and constellations. It helps beginners recognize objects overhead by pointing a phone toward the sky.
Sky Guide
Sky Guide identifies visible celestial objects through an augmented reality sky map for mobile devices. It reduces the learning curve of finding stars and constellations during casual night-sky observation.
ISS Detector
ISS Detector alerts users to visible International Space Station passes and other selected satellite events. It solves the timing problem of spotting fast-moving spacecraft during their short visibility windows.
GoSatWatch
GoSatWatch tracks satellites and predicts passes using orbital data, maps, and augmented reality views. It helps users locate specific satellites without calculating orbital positions or pass geometry themselves.
Satellite Tracker by Star Walk
Satellite Tracker shows satellite positions, pass predictions, and orbital paths on interactive maps. It helps users distinguish satellites overhead from aircraft by supplying live identification and trajectory information.
CelesTrak
CelesTrak publishes orbital element sets, satellite catalogs, and related tracking data for space objects. It gives developers and analysts accessible source data for propagating satellite orbits and building tools.
N2YO.com
N2YO.com tracks satellites and provides pass predictions, orbital information, and live map visualizations. It helps users check a satellite's current position without operating specialized tracking software.
Gpredict
Gpredict predicts satellite positions and passes while supporting radio rotator and transceiver control. It helps amateur radio operators coordinate antenna pointing and contacts with orbiting satellites.
SatNOGS Network
SatNOGS Network coordinates community ground stations that collect and share satellite observation data. It helps small satellite teams access distributed ground observations without building global station coverage.
GMAT
NASA's General Mission Analysis Tool models spacecraft trajectories, maneuvers, and mission operations. It helps mission designers evaluate orbital scenarios without writing every propagation and targeting routine.
Ansys STK
Ansys STK models satellites, sensors, communications links, coverage, and mission scenarios in four dimensions. It helps engineering teams assess space-system interactions before committing to hardware or operational plans.
FreeFlyer
FreeFlyer provides spacecraft mission design, orbit propagation, simulation, and operations analysis capabilities. It helps mission teams test trajectory and operations assumptions before executing real spacecraft activities.
Orekit
Orekit is a Java library for orbital mechanics, spaceflight dynamics, and satellite mission analysis. It helps software teams avoid implementing foundational astrodynamics calculations from scratch.
poliastro
poliastro is a Python library for astrodynamics calculations, orbit visualization, and mission-design workflows. It helps Python users prototype orbital analyses without assembling low-level numerical mechanics code.
ESA EO Browser
ESA EO Browser lets users search, visualize, compare, and download Earth observation satellite imagery. It helps non-specialists inspect satellite imagery without navigating separate mission-specific data archives.
NASA Worldview
NASA Worldview browses and compares many near-real-time and historical Earth science imagery layers. It helps analysts rapidly inspect environmental events without processing raw remote-sensing data first.
Google Earth Engine
Google Earth Engine supports large-scale geospatial analysis using satellite imagery and cloud-based computation. It helps teams analyze extensive Earth observation datasets without maintaining their own processing infrastructure.
OpenSpace
OpenSpace visualizes Earth, the solar system, spacecraft data, and scientific datasets in immersive environments. It helps educators and researchers communicate spatial scientific relationships that are difficult to convey in charts.
CesiumJS
CesiumJS is a JavaScript library for building interactive three-dimensional geospatial and orbital visualizations. It helps web developers present globe-scale spatial data without creating a three-dimensional rendering engine.
SpaceEngine
SpaceEngine is a 3D planetarium that explores a procedurally generated universe using astronomical catalog data. It helps users visualize cosmic scales and distant objects that static images cannot easily convey.
Universe Sandbox
Universe Sandbox simulates gravity, climate, collisions, and orbital interactions among celestial bodies in real time. It helps learners test space scenarios without performing complex physics calculations by hand.
Celestia
Celestia is a free 3D space simulator for traveling through planets, stars, galaxies, and spacecraft. It helps users explore astronomical locations interactively instead of relying on disconnected maps and reference materials.
KStars
KStars is a desktop planetarium that displays the night sky and supports telescope control through Ekos. It helps amateur astronomers coordinate sky observation and equipment operations from one application.
Cartes du Ciel
Cartes du Ciel is a sky charting program for planning observations and controlling compatible telescopes. It helps observers identify targets and prepare viewing sessions before setting up outdoors.
Aladin Sky Atlas
Aladin Sky Atlas visualizes astronomical images, catalogs, and survey data across the celestial sphere. It helps researchers compare distributed sky datasets without manually aligning images from multiple archives.
WorldWide Telescope
WorldWide Telescope is a visualization platform for exploring astronomical imagery, catalogs, and guided tours. It helps educators present complex space data through navigable visual experiences and annotations.
SIMBAD
SIMBAD is an astronomical database providing object identifiers, classifications, measurements, and bibliographic references. It helps researchers resolve conflicting object names and locate related scientific literature quickly.
VizieR
VizieR provides access to thousands of published astronomical catalogs and their tabular source data. It helps analysts find reusable catalog measurements without extracting tables individually from academic papers.
NASA Exoplanet Archive
NASA Exoplanet Archive provides confirmed exoplanet data, candidate information, and tools for planetary research. It helps researchers access standardized exoplanet records instead of reconciling results across scattered publications.
MAST Portal
MAST Portal searches and retrieves astronomy data from NASA missions, observatories, and astronomical archives. It helps scientists locate relevant observation files across multiple missions through a unified interface.
ESASky
ESASky visualizes and downloads astronomical data products from European Space Agency science missions. It helps users discover mission observations geographically rather than navigating separate mission-specific archives.
JPL Horizons
JPL Horizons generates ephemerides for solar system bodies, spacecraft, and selected natural satellites. It helps mission planners and observers obtain precise positional predictions without building orbital models.
SPICE Toolkit
SPICE Toolkit provides software libraries and data formats for spacecraft geometry and mission observation calculations. It helps engineering teams calculate mission geometry consistently across instruments, trajectories, and observation timelines.
Space-Track.org
Space-Track.org provides satellite catalog data, orbital elements, and space surveillance information to registered users. It helps operators obtain tracking data for conjunction analysis and satellite position prediction.
DISCOSweb
DISCOSweb is ESA's database interface for information about space objects, launches, and orbital events. It helps space professionals investigate object histories without assembling records from separate launch and tracking sources.
UCS Satellite Database
The UCS Satellite Database catalogs active satellites with operator, mission, orbit, and launch details. It helps researchers compare operational satellites without compiling basic facts from many company and agency sources.
Copernicus Browser
Copernicus Browser lets users view, analyze, and download imagery from the Sentinel satellite missions. It helps Earth observation users inspect recent satellite imagery without managing raw archive search workflows.
Sentinel Hub
Sentinel Hub provides web services and tools for accessing, processing, and visualizing Earth observation imagery. It helps developers use satellite imagery without building their own large-scale data processing infrastructure.
QGIS
QGIS is an open-source geographic information system for mapping, analyzing, and editing geospatial data. It helps teams combine satellite-derived layers with local data for practical spatial analysis.
ESA SNAP
ESA SNAP processes and analyzes Earth observation data, particularly imagery from Sentinel missions. It helps analysts prepare satellite products using specialized workflows rather than developing processing pipelines themselves.
ENVI
ENVI is geospatial software for processing, analyzing, and extracting information from remote sensing imagery. It helps imagery analysts turn complex raster data into interpretable land, water, and environmental insights.
ArcGIS Earth
ArcGIS Earth is a desktop application for viewing 3D geographic data, imagery, and terrain. It helps teams inspect geospatial context in three dimensions without constructing custom visualization software.
Astrometry.net
Astrometry.net identifies star fields in astronomical images and calculates their sky coordinates automatically. It helps astronomers calibrate unlabeled images without manually matching stars against reference charts.
Siril
Siril is open-source software for calibrating, aligning, stacking, and processing astrophotography images. It helps astrophotographers reduce noise and combine multiple exposures into clearer final images.
PixInsight
PixInsight processes astronomical images with calibration, stacking, color correction, and advanced post-processing tools. It helps astrophotographers turn noisy raw captures into detailed final images through repeatable processing workflows.
AstroPixelProcessor
AstroPixelProcessor calibrates, integrates, and processes deep-sky astrophotography data from multiple imaging sessions. It reduces the complexity of combining large image datasets with differing exposures, filters, and conditions.
DeepSkyStacker
DeepSkyStacker calibrates, registers, and stacks multiple astrophotography exposures to improve deep-sky image signal. It reduces the tedious manual alignment needed when combining many faint-object exposures.
N.I.N.A.
N.I.N.A. automates astrophotography imaging sequences using compatible cameras, mounts, focusers, and other connected equipment. It helps imagers avoid repeatedly supervising routine capture tasks during long overnight sessions.
Sequence Generator Pro
Sequence Generator Pro coordinates camera, telescope, filter wheel, and focusing workflows for automated imaging. It addresses fragmented equipment control by organizing a planned imaging session within one sequence.
Voyager
Voyager automates astrophotography acquisition, observatory actions, and equipment safety routines through customizable sequences. It helps remote imagers manage complex overnight operations without manually issuing every equipment command.
ACP Observatory Control
ACP Observatory Control schedules and operates telescope observatories, including imaging plans and remote access. It helps observatory operators reduce coordination overhead when multiple users need structured telescope access.
TheSkyX
TheSkyX provides planetarium visualization, telescope control, and observing tools for compatible astronomical equipment. It helps observers connect sky maps with telescope movement instead of manually translating celestial coordinates.
CCDCommander
CCDCommander automates imaging sequences by coordinating telescope, camera, guider, and observatory software. It reduces repetitive setup work required to execute multi-target astrophotography sessions reliably.
PHD2
PHD2 guides telescope mounts by monitoring a guide star and correcting tracking errors. It helps astrophotographers prevent star trailing during long exposures caused by imperfect mount tracking.
SharpCap
SharpCap captures astronomical camera video and images, with live stacking and polar-alignment assistance. It helps observers quickly improve alignment and view faint objects without lengthy manual processing.
ASIAIR
ASIAIR controls supported astrophotography cameras, mounts, focusers, and accessories through a mobile interface. It simplifies field imaging by replacing several separate equipment-control applications with one coordinated workflow.
Ekos
Ekos manages astronomical imaging equipment for capture, guiding, focusing, alignment, and scheduling tasks. It helps Linux-based observatories coordinate diverse hardware without switching between separate control programs.
INDI Library
INDI Library provides a protocol and drivers for connecting astronomy software with observatory hardware. It addresses hardware interoperability problems by giving compatible applications a common device-control interface.
Astro Photography Tool
Astro Photography Tool automates imaging sessions with camera control, plate solving, guiding, and focusing. It helps astrophotographers reduce missed exposures caused by manually coordinating several connected devices.
FireCapture
FireCapture records high-speed planetary and lunar video from supported astronomy cameras and accessories. It helps planetary imagers efficiently capture thousands of frames needed to overcome atmospheric distortion.
AutoStakkert!
AutoStakkert! analyzes, aligns, and stacks selected frames from planetary or lunar video recordings. It helps imagers isolate sharper moments from turbulent video instead of evaluating frames manually.
RegiStax
RegiStax aligns, stacks, and sharpens planetary or lunar image sequences using wavelet processing. It helps users reveal fine surface detail that remains hidden in individual low-contrast frames.
WinJUPOS
WinJUPOS measures planetary features and derotates images to compensate for planetary rotation. It helps planetary imagers combine longer capture sessions without blurring rotating surface features.
AstroPlanner
AstroPlanner helps observers plan sessions, organize object lists, and log telescope observations. It reduces time spent deciding what to observe by organizing targets around available observing conditions.
SkyTools
SkyTools plans observing sessions using celestial object data, charts, and personalized equipment settings. It helps visual observers identify suitable targets for their location, telescope, and available time.
AAVSO VSX
AAVSO VSX is a searchable catalog of known variable stars and their observational properties. It helps variable-star observers verify target identities and find reference information before collecting measurements.
Lightkurve
Lightkurve provides Python tools for downloading, analyzing, and visualizing Kepler and TESS light curves. It helps researchers avoid building basic time-series workflows from scratch for space-telescope data.
Astropy
Astropy provides Python utilities for astronomical coordinates, units, time calculations, tables, and data formats. It helps developers handle astronomy-specific calculations consistently rather than implementing error-prone custom conversions.
SAOImage DS9
SAOImage DS9 displays and analyzes astronomical images, catalogs, regions, and FITS data files. It helps researchers inspect complex image datasets visually without writing custom visualization software.
Open MCT
Open MCT is a web-based framework for visualizing, monitoring, and analyzing mission telemetry data. It helps operations teams replace fragmented telemetry displays with configurable views tailored to mission workflows.
Yamcs
Yamcs provides mission control functions for processing telemetry, sending commands, and archiving spacecraft data. It helps teams manage command and telemetry pipelines without building core ground-system services from scratch.
OpenC3 COSMOS
OpenC3 COSMOS is a command and control platform for testing, operating, and monitoring systems. It helps engineering teams centralize test procedures, telemetry displays, and command execution for complex hardware.
Basilisk
Basilisk is an open-source simulation framework for spacecraft dynamics, guidance, navigation, and control. It helps mission designers test control algorithms in simulation before risking hardware or flight operations.
Tudat
Tudat is an astrodynamics toolkit for simulating trajectories, spacecraft dynamics, and orbit determination. It helps researchers model challenging orbital scenarios without implementing fundamental astrodynamics routines themselves.
Skyfield
Skyfield is a Python library that calculates precise positions for satellites, planets, and stars. It helps developers produce accurate astronomical calculations without manually handling ephemeris and time-scale complexities.
SunPy
SunPy is a Python library for analyzing solar physics data from observatories and space missions. It helps solar researchers work across specialized data formats using reusable scientific analysis tools.
SpiceyPy
SpiceyPy provides Python access to NASA SPICE geometry and navigation calculation routines. It helps Python users calculate mission geometry without directly integrating the underlying SPICE C toolkit.
PyEphem
PyEphem calculates positions of celestial bodies, satellites, and observers using astronomical ephemerides. It helps developers quickly generate sky-position predictions for observation planning and educational applications.
PyOrbital
PyOrbital calculates satellite positions, ground tracks, and observer look angles from orbital elements. It helps satellite-data users determine overpasses and viewing geometry without writing propagation calculations manually.
OpenRocket
OpenRocket simulates model rocket designs, flights, stability, and recovery systems using aerodynamic models. It helps rocketry builders evaluate likely flight behavior before spending materials on physical prototypes.
RocketPy
RocketPy is a Python library for simulating rocket flights, motors, aerodynamics, and recovery systems. It helps technical rocketry teams automate trajectory studies and compare design assumptions through code.
Juno: New Origins
Juno: New Origins is a simulation game for designing vehicles and flying missions across planetary systems. It helps aspiring aerospace builders explore propulsion, staging, and orbital mechanics through interactive experimentation.
Orbiter
Orbiter is a spaceflight simulator that models spacecraft operations, orbital mechanics, and planetary exploration. It helps learners practice orbital maneuvers and mission procedures in a detailed virtual environment.
Next Spaceflight
Next Spaceflight tracks upcoming launches, mission details, launch providers, and space industry news. It helps launch followers consolidate changing schedules and mission information from multiple space organizations.
Space Launch Now
Space Launch Now provides launch schedules, countdowns, mission information, and notifications for spaceflight events. It helps users avoid missing launches by delivering timely schedule updates and countdown reminders.
SpaceWeatherLive
SpaceWeatherLive publishes solar activity, geomagnetic conditions, aurora forecasts, and related space-weather observations. It helps aurora watchers interpret current solar conditions when deciding whether observation opportunities are likely.
NOAA Space Weather Prediction Center
NOAA's Space Weather Prediction Center publishes forecasts, alerts, and data about solar-terrestrial activity. It helps operators assess space-weather risks that can disrupt communications, navigation, and power systems.
NASA FIRMS
NASA FIRMS maps active fires using near-real-time satellite observations from multiple Earth-observing instruments. It helps responders locate recent fire detections without processing raw satellite imagery independently.
NASA Earthdata Search
NASA Earthdata Search lets users discover, filter, and access NASA Earth science datasets. It helps researchers find relevant geospatial data across distributed archives through one searchable interface.
USGS EarthExplorer
USGS EarthExplorer provides searchable access to aerial imagery, satellite data, and geospatial products. It helps analysts locate historical imagery for a specific place and date without contacting separate archives.
JPL Small-Body Database Browser
JPL's Small-Body Database Browser provides orbital, physical, and discovery information for asteroids and comets. It helps researchers quickly inspect known small-body records without compiling data from disparate catalogs.
NASA Sentry
NASA Sentry monitors potential future Earth impacts from near-Earth asteroids using automated risk assessments. It helps users review continuously updated impact-risk information rather than interpreting asteroid observations alone.
JPL Scout
JPL Scout evaluates newly discovered objects for possible Earth impact risks before orbit confirmation. It helps observers prioritize follow-up of newly reported objects with potentially concerning trajectories.
TOPCAT
TOPCAT is a desktop application for viewing, analyzing, and cross-matching large astronomical data tables. It helps astronomers explore catalog datasets interactively without building custom scripts for every comparison.
These tools illustrate how space software can support everything from a backyard observation session to mission planning and geospatial analysis.