OSDev.org

BlockOS is looking for contributors!
We're building a hobby operating system with our own kernel, VFS, framebuffer GUI and drivers.
We're currently a small team and looking for contributors interested in kernel development, drivers, filesystems and GUI development.
Beginner-friendly issues are available, and you don't need to commit every day.

Details?

A link to your design specifications and work to date would be helpful.

Found it I think:

https://github.com/gurijb2016-afk/Blockos

Now I just need to contact them. The channel #blockosdev is empty.

https://wiki.osdev.org/Beginner_Mistakes I feel this should be enough info for you.