Open-source vector similarity search for Postgres

An open source utility that provides fast incremental file transfer. It also has useful features for backup and restore operations among many other use cases.

Specification for Eddystone, an open beacon format from Google

A port of Doom (1993) that runs inside a PDF file

The papers and books I've read or am about to read.

Enhanced GNU Make - tracing, error reporting, debugging, profiling and more

A port of ChibiOS to the Orchard radio platform

Explore mathematical spaces related to Ramsey-type problems.