Original Apollo 11 Guidance Computer (AGC) source code for the command and lunar modules.

The original sources of MS-DOS 1.25, 2.0, and 4.0 for reference purposes

Collection of malware source code for a variety of platforms in an array of different programming languages.

flat assembler 1 - reconstructed source history

flat assembler 2

PHP Fiber extension

Assembly implementations of cryptographic hash functions

Concurrent Task Extension