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I develop free and open source mathematical software. Donations are welcome as a sign of support and will also help pay for expenses such as website hosting, domain names, hardware and occasional travel that I otherwise cover out of my own pocket.
Current sponsors 1
Past sponsors 3
Featured work
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fredrik-johansson/fungrim
Fungrim: the Mathematical Functions Grimoire
Python 119 -
fredrik-johansson/flint
My copy of FLINT -- please use https://github.com/flintlib/flint/ for development
C 82 -
fredrik-johansson/midi
🎵 Open source MIDI music 🎵