I wrote pdf2png to make a fast PDF to PNG converter, uses C.
I wrote manipulate-mediastream to learn how to process data from a WebRTC stream and render it
in an HTML5
The Ise Grand Go program
There’s some backstory here. My friend taught me how to play Go back in 2011. I wrote a mostly-working Go program in JS in 2014, then re-wrote it in Ruby in 2014, then re-wrote it again in 2018. The reason I call it Ise Grand is because the Ise Grande Shrine in Japan is rebuilt every 20 years, and has been for 1300 years. I keep rewriting the game to make it better, and never get around to playing it.