Celestia Alternatives [Page 4]

Concord is self hosted CRM application focused on closing deals faster, manage contacts and companies and has dead simple and affordable pricing.

paid $64.0 / One-off (* Lifetime License * All Features * Unlimited users)

Systems Tool Kit (STK) is a platform for analyzing and visualizing complex systems in the context of a space mission.

FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun.

Try for free freemium $25.0 / Monthly (Essentials plan)

The Starry Night apps are the most comprehensive educational astronomy apps.

SkEye is an advanced Planetarium that can also be used as a PUSHTO guide for telescopes.

Gravitational n-body and space simulator written in JavaScript and WebGL.

Aciqra is a virtual sky map and planetarium that shows astronomical objects in the sky from the past, present and future.

Ethereum is a decentralized platform for applications that run exactly as programmed without any chance of fraud, censorship or third-party interference.

Open Source

QGIS is a desktop geographic information system, or GIS.

Open Source

Asynx Planetarium is a free astronomy software for MS-Windows PC to see when planets are visible; For the present, past and future and from any location on earth!

Explore, build, fight, trad and mine in a procedural co-op space sandbox.

Moonphase is software that allows you to see what phase of the moon is currently visible to you.

Perfex CRM is an online self-hosted customer relationships management platform that allows you to grow your business with robust integration services.

Interactive global satellite images