RFC 7914: The scrypt Password-Based Key Derivation Function, by C. Percival and S. Josefsson.

OpenBSD (with encrypted softraid) on the Chromebook Pixel (2015), by Joshua Stein.

Haversine is a dialect of Logo based around spherical geometry.

ngn/apl, an APL compiler written in JavaScript. Very nice!

Hipku, encode any IP address as a haiku.

How to compute Σ1/n² by solving triangles (2007), by Mikael Passare.

The collected works of F. W. Lawvere on GitHub.

Division algorithms, overview at Wikipedia.

How To Retarget the GNU Toolchain in 21 Patches, quite interesting.

Obscure Ethernet for $200 please, Alex: The Ethernet PAUSE frame

bucklespring emulates the sound of a IBM Model-M space saver bucklespring keyboard.