An open-source time-series SQL database optimized for fast ingest and complex queries. Packaged as a PostgreSQL extension.

Simple and portable (but not inflexible) GUI library in C that uses the native GUI technologies of each platform it supports.

AirPlay and AirPlay 2 audio player

Transmits AM radio on computers without radio transmitting hardware.

nanomsg library

Checked C is an extension to C that lets programmers write C code with bounds checking and improved type-safety. The goal is to let people easily make their existing C code type-safe and eliminate …

Hardware backdoors in some x86 CPUs

Horizon is a free EDA package

FT8 library

Complex Continuous Wavelet Transform

C99 implementation of HSLuv (revision 4)