Sky Atlas is an interactive map of the night sky — showing millions of stars, thousands of deep sky objects (DSOs), and more!
Python library for creating star charts and maps.
WordBrew is a tool for exploring words and their related words. It's similar to a thesaurus, but also much more. It's powered by the wonderful WordNet database.
PhotoNaturalist was a blog on nature photography that I maintained from 2009-2019. Every week I published a new article about how to improve your nature photos.