Description: OpenStreetMap is a free, open-source, crowd-sourced map of the world. Volunteers collect map data using GPS devices, aerial imagery, local knowledge, and other free sources to create and update the map database.
Type: software
Pricing: Open Source
Description: Space Engine is a free software program that allows users to explore the universe in 3D, from planet Earth to the most distant galaxies. It generates procedural planets, stars, and galaxies based on scientific data and allows virtual space tourism.
Type: software
Pricing: Open Source