Linux Kernel source tree
GaryOS is an entire GNU/Linux system in a single bootable file
Tool kit for building highly secure special-purpose operating systems
Get latest Edition here: http://www.openqrm-enterprise.com.
Rewrite Minix 3 from C to D
Reductively Architected Breviloquently Built Information Environment
Fulcon can generate full OS environment to the container like the VM.
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
KaarPux - Linux/GNU/GNOME build from source
opensource-operation-system
VozBox. Asterisk VoIP PBX.
Pre-Alpha Console distro for high performance Linux computing.
Simple, Fast, Advanced... ZintoriOS. Made in Wellington, New Zealand
A universal 64-bit Operating Environment for Multi-Processor Machines.
The Arch Linux Kernel and modules suitable for Amazon EC2.
OSAF-TK your one stop shop for Android malware analysis and forensics.
U-tube is a dynamic memory management tool for Xen virtualized envi
A minimal Linux distro
PrimOS is a 32bit multi-task OS, which is still under development.
Orange JeOS ("juice") is a small and secure Linux distribution