Microsoft BASIC for 6502 Microprocessor
SIMD-accelerated libjpeg-compatible JPEG codec library
M6811 Code-Seeking Disassembler
Boilerplate Collection for Retro Computers
Pattern-based multi/many-core parallel programming framework
My own operating system.
Custom firmware and IDE for the VEX Cortex Microcontroller
Fixed point 16/32 integer FFT library for the Raspberry Pi and Android
Hypervisor R&D for recent x86 with support for DRTM + 2D paging
Re-imagining of Heisermann's classic Self-Programming Robot
COBOL compiler for the PC x86-32 platform.