WhoIsAtMarsToday? is a web app inspired by How Many People Are In Space Right Now?, listing the robots (and eventually humans) currently operational on the surface of, and on orbit around, Mars.
WhoIsAtMarsToday? automatically updates daily via crowdsourced data. This data is scraped from Wikipedia's List of Missions to Mars, and parsed using wtf_wikipedia.
WhoIsAtMarsToday? is ethical open source software, offered under the Hippocratic License 3.0, a permissive license that enforces the licensee to comply with human rights principles and laws.
Other software packages and libraries used fall under their own respective licenses.