TOPCAT is described as 'It offers a variety of ways to view and analyse tables, including a browser for the cell data themselves, viewers for information about table and column metadata, and facilities for sophisticated interactive 1-, 2-, 3- and higher-dimensional visualisation, calculating statistics' and is an app in the education & reference category. There are more than 10 alternatives to TOPCAT for a variety of platforms, including Windows, Mac, Android, iPhone and iPad apps. The best TOPCAT alternative is Stellarium, which is both free and Open Source. Other great apps like TOPCAT are Sky Map, KStars, Gaia Sky and Solar System Scope.
SkyORB is more than a simple star map, it's a collection of 7 tools including a 3D star map, 3D planetarium, ephemeris, search engine, sun clock, point to sky, weather, and more.
SkEye is an advanced Planetarium that can also be used as a PUSHTO guide for telescopes.
StarMap 3D Plus is the portable star atlas for beginners or advanced astronomers. Use StarMap 3D Plus to find the planets, stars, constellations, star clusters, galaxies, and nebulae visible to you based on your location and time.
The Night Sky app enables you to identify the stars, planets, galaxies, and constellations you can see above.
Displays the sky view at the correct orientation when held at any angle not just landscape or portrait. Simple operation, no buttons to press or modes to select, just point to the sky to start exploring.
Aladin is an interactive sky atlas allowing the user to visualize digitized astronomical images or full surveys, superimpose entries from astronomical catalogues or databases, and interactively access related data and information from the Simbad database, the VizieR service and...
This program enables you to draw sky charts, making use of the data in 16 catalogs of stars and nebulae. In addition the position of planets, asteroids and comets are shown.
The Sun's and Earth's rotation axes are both tilted with respect to the ecliptic, the plane of the Earth's orbit around the Sun.
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