Fifth Star Labs is a Seattle-based software development company, known for their award-winning app, Sky Guide, available on the App Store.

SkySafari 7 Pro simulates over 75 million stars down to 16th mangnitude, 3 million galaxies down to 18th magnitude, and 620,000 solar system objects; including every comet and asteroid ever discovered. And, state-of-the-art mobile telescope control.

Stellarium Mobile Plus is the next generation astronomy star map app. It combines a realistic and accurate night sky simulation with a gigantic amount of online imaging and sky objects catalogs.

A planetarium for your terminal! Explore stars, planets, constellations, and more, all rendered right in the command line—no telescope required. ✨🪐 - da-luce/astroterm

Sky Map (formerly Google Sky Map, open sourced in 2012) - GitHub - sky-map-team/stardroid: Sky Map (formerly Google Sky Map, open sourced in 2012)

Planetary motion

Explore the night sky tonight from your location. Try this exquisite stargazing tool. Take an effortless journey through thousands of stars, planets and constellations.

Stellarium Web is a planetarium running in your web browser. It shows a realistic star map, just like what you see with the naked eye, binoculars or a telescope.

Stellarium is a planetarium software that shows exactly what you see when you look up at the stars. It's easy to use, and free.

TheSkyLive.com provides detailed information, precise position and sky charts for the most import Solar System and Deep Sky objects