Star Chart - 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. Read more about Star Chart.
Mitaka - Mitaka is software for visualizing the known Universe with up-to-date observational data and...
Google Sky Map - Google Sky Map is a free hand-held planetarium that allows you to identify stars, planets and more.
OpenSpace - OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.
Code NASA - 253 NASA open source software projects
Sky Guide - A window to the stars has never been more beautiful and easy to use.