A small, comprehensive and portable cryptographic ANSI C library. Provides a good collection of cryptographic primitives, multiple precision integers and elliptic curve arithmetic.
CRY @ gitlab
CRY @ github
A simple "Unix-like" x86 kernel trying to be POSIX compliant. The project does not have any long term mighty ambition and is not under active development anymore. It just wants to be a good learning tool for operating systems and low level programming topics.
BeeOS @ github
A fairly complex C library maily used for IoT and SCADA applications implementing a collection of open standard communication protocols such as: DNP3, DLMS/COSEM, MBus, SML, Modbus, ICCP, TLS.