"World Wind is a free, open source API for a virtual globe. World Wind allows developers to quickly and easily create interactive visualizations of 3D globe, map and geographical information. Organizations across the world use World Wind to monitor weather patterns, visualize cities and terrain, track the movement of planes, vehicles and ships, analyze geospatial data, and educate people about the Earth."
SpaceEngine - is a free space simulation software that lets you explore the universe in three dimensions, starting from planet Earth to the most distant galaxies. Areas of the known universe are represented using actual astronomical data, while regions uncharted by human astronomy are generated procedurally. Millions of galaxies, trillions of stars, countless planets!
ChronoZoom is an open source community project dedicated to visualizing the history of everything to bridge the gap between the humanities and sciences using the story of Big History to easily understand all this information. This project has been funded and supported by Microsoft Research Connections in collaboration with University California at Berkeley and Moscow State University.
"What's my place in the world population? How long will I live?
The Journey of your life in numbers and dates!
Please enter your date of birth, country of birth and sex at birth:"
OpenSimulator is an open source multi-platform, multi-user 3D application server. It can be used to create a virtual environment (or world) which can be accessed through a variety of clients, on multiple protocols. OpenSimulator allows virtual world developers to customize their worlds using the technologies they feel work best - we've designed the framework to be easily extensible. OpenSimulator is written in C#, running both on Windows over the .NET framework and on *ix machines over the Mono framework. The source code is released under a BSD License, a commercially friendly license to embed OpenSimulator in products.