Omacosy brings Omarchy-style tiling desktop experience to macOS without disabling SIP

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A developer has released Omacosy, an open-source tiling window manager setup for macOS inspired by the Linux-based Omarchy desktop environment. The project combines AeroSpace, Karabiner, and five custom Swift binaries to deliver keyboard-first window tiling, a custom menu bar, focus-follows-mouse, and workspace management. AeroSpace was chosen over the popular yabai alternative specifically to avoid disabling System Integrity Protection, a core macOS security feature. The setup uses approximately 157 MB of RAM and includes install and uninstall scripts that log changes, allowing the system to be restored to its prior state. The developer, currently running it on an M1 Max MacBook under macOS 26, is seeking community feedback on rough edges and performance issues.

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