59 programming languages from Fortran (1957) to Zig (2015): when each began and which language it grew out of, with a circle for how many developers still write it on GitHub. JavaScript, Python and TypeScript dwarf everything; ALGOL, Simula and Self, the ancestors of half the tree, are hollow rings.
Hover or tap a circle for its year and how many developers use it.
Data: Wikidata (CC0), each language’s inception year and what influenced it, with one main parent drawn for each; GitHub Innovation Graph (CC0), developers pushing each language in 2026 Q1, summed over every country. The same GitHub data is a daily puzzle in World Imposter and Daily Shade: which countries code in PHP, Python and Ruby.