Cosmos (C# Open Source Managed Operating System)

Cosmos is an operating system "construction kit", built from the ground up around the IL2CPU compiler in C# and our home-brewed language called X#.

It's current stage is only usable for academic work. Some day Cosmos will be ready for production work, but to reach that stage we need more developers. Specifically, we need a few more low-level developers to help the few core developers who are currently overwhelmed with work.

Downloads:

Cosmos is available in two flavors:

• User Kit - The User Kit is used to develop your operating system in Visual Studio. If you are new to Cosmos, you can learn here. Latest Release available.
• Development Kit (Devkit) - The Development Kit is the full Cosmos source and build tools. If you need to modify the Cosmos core functions or modify built-in drivers, boot, compiler, etc.. you will need to use Development Kit. Tutorial for building the Development Kit - Building from the source is easy with our automated builder.

Getting Started

• Documentation for Cosmos
• Video Tutorial for using Visual Studio Express Editions
• FAQ (Frequently Asked Questions)
• Low Hanging Fruit - Looking for something easy to do and prove your worth in Cosmos? Here are a few easy tasks we have on our to do list that are also of importance to us.

Joining and helping Cosmos

• Gitter.im - The Live Chat: Click the green Join Chat badge at the top of this file. As with the IRC and CodePlex chat, please be patient if we don't respond immediately (no pinging).
• Yahoo Group - Email Discussion List: To prevent spam-bots from spamming, we ask you introduce yourself to join. Please mention something specific to Cosmos. For example: "Hey, I want to join" won't get you in....
• Facebook - Like us to see frequent updates of what is going on with Cosmos.
• YouTube Channel - Follow to see useful videos and help you programming your operating system.
• Resources - More Cosmos related links.

Articles and Resources

• Develop Your Own Operating System in C# or VB.NET
• Quick View Under the Hood
• Intro to Plugs
• X86 Assembly Debugger Preview
• Making a Remote PC Slave for Debugging or Fun (old article, code deprecated)
• Tutorials for Cosmos
• Projects for Cosmos

Publicity

• Mary Jo Foley - Cosmos: An open-source .Net-based micro-kernel OS is born
• Scott Hanselman - Tiny Managed Operating System Edition

Videos

We encourage you to add your own Cosmos videos to YouTube. Please add the tags Cosmos and C# when uploading.

Official Videos - Videos made by the Cosmos Team.

• 2016 Nov 23 - Cosmos interview for Channel 9
• Building your first Operating System in less than 60 seconds
• Cosmos Debugging
• Cosmos PXE network boot with VMware
• Debugging on real hardware
• User Cosmos videos on YouTube (Cosmos, C#)

User Videos - Selected videos made by Cosmos Users. Please note that we have not verified each of these videos.

• Cosmos Tutorial C# Lesson 1 - Part 1 - int0x10.com
• Cosmos Tutorial C# Lesson 1 - Part 2 - int0x10.com
• Cosmos Tutorial C# Lesson 2 - int0x10.com