building Cursor @anysphere. formerly @github, creator of the merge button. founder @fancybits contributor to golang and ffmpeg.
Mochi is a small, fast, embeddable programming language designed for agents, data, and AI. It combines functional syntax, stream-first semantics, and native support for datasets, graphs, and simulation.
like strace, but for ruby code
a sampling call-stack profiler for ruby 2.2+
extracts high-resolution emoji pngs from /System/Library/Fonts/Apple Color Emoji.ttf
parallel test runner for CI environments