NCZ-OS, zoder and MNEMOS
Three open-source projects. Each one has its own page with what it is, what you need, and how to install it.
All the code is on GitLab, in the ncz-os group.
-

NCZ-OS
Agentic Operating System for AMD64/T2 and ARM64.
It is based on Debian. It is made for Arm64 boards with the CIX Sky1 chip, and for Intel and AMD PCs and Apple T2 Macs.
Tested on: Radxa Orion O6N, Minisforum MS-R1, one Apple T2 Mac (MacBookPro16,1), one older Mac (Mac mini 2011) and a few PCs (lightly tested). Other hardware is untested by the project.
You download a disk image, write it to a USB drive and install from it. The current download is a preview (test) release.
-

zoder
A command-line tool for AI pair-coding and code review. It sends work to free and open-weight models first. It only uses a paid model when you allow it.
Install it on Linux with one command, or run it in a container.
-

MNEMOS
A memory system for AI agents. Agents save and search memories that last between sessions.
Run it with one container command, or install it from source.
Prefer to let a coding agent do it?
Each project page has an "Ask your coding agent" box. Copy the text into the coding agent you already use. It tells the agent to read the project's own instructions, show you every command first, and install nothing extra.