The Banana Kernel is an open-source pedagogical operating system intended to provide useful means for teaching basic OS concepts, with the possibility of interaction with external modules developed by the teacher or student.
Customize Kernel 64-Bit Operating System
An Open Source Solution usable instead of Microsoft Windows. The ck64os enables server operating system tasks but is downgradable to an End-User software distribution for Tablet-PCs. It's Microsoft Windows application programming interface compability bases on incorporated virtualization layers.