Pyxis OS

An operating system where every resource is a URI served by a userspace provider, and programs hold only the capabilities they are granted.

In development since September 2026. Latest release: 0.0.7 (October 2026). The first build for outside testers is planned for 0.0.8.

Its own kernel, Caelum, for x86-64 with SMP, written in C23.
Resources are addressed as URIs such as home://, system:// and https://; reading a web page is cat https://example.com.
Spaces: separate sessions with their own roots and grants.
Runs on a ThinkPad T14 (AMD), an IdeaPad Slim 5 (Intel) and QEMU.
Native Neovim with clangd, Clang, a package manager, Doom and Quake.