midi audio decoder (.mid)

DrPetter's audio decoder (.sfxr)

module audio decoder (.mod, .s3m, .xm, .it ...)

Teal interpreter (.tl) https://teal-language.org/

pug image decoder (.pug) https://github.com/r-lyeh/pug

adpcm audio encoder (.adpcm)

furnace audio decoder (.fur) https://github.com/tildearrow/furnace

Python 3.x interpreter (.py) https://pocketpy.dev/

ffmpeg transcoder

vorbis audio encoder (.ogg)