SpaceBarOS
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SpaceBarOS is a lightweight spacebar-oriented operating system for the x86 platform.

To get started with SpaceBarOS, using a Debian-like system:
sudo apt install build-essential nasm qemu-system-x86
git clone https://github.com/irl/SpaceBarOS.git
cd SpaceBarOS
make run
SpaceBarOS will then launch in QEMU.
A JavaScript based simulator of SpaceBarOS is available for those that would like to have the experience of running it without having to set up a VM or finding a PC to run it on.