MOK (Multitasking Operations Kernel) [Pronounced Mäk] Is a new, revolutionary Operating System that learns from the user, making it easy to use in every way.

A complete operating system written in C#.

a Small OS made for fun.

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Build your own os, with the help of Kernel Developent Kit. With minimal Assembly and C code, around 99.9% of the code is written in C++ using object oriented design.

'LightingBolt' is a fully-featured, preemptive, modular, real-time kernel developed for the ARM7/9 family of microcontroller.

It's a metadata file system for Windows built in C++ and C#. It allows users to capture extended file information that dynamically renders customized templates.

OpenSOCKS is the best of two fantastic C# -> OS kernel compilers (MOSA and COSMOS) We are open source and aim to make our kernel simple and full of features. OpenSOCKS (Open Shared Objective Collaborative Kernel System) - by the makers of PearOS

POSx86 is an operating system, with awesome TUI,CLI and a bit of serial networking, Also features applications and a BASIC Interpreter........