Jankyborders is a lightweight window border system for macOS that draws custom borders around windows with minimal performance overhead.
The tool solves the problem of adding visual window separation on macOS without the resource cost of heavier alternatives. It works by rendering borders directly around active and inactive windows, allowing users to customize appearance through configuration. The system integrates closely with tiling window managers, particularly Yabai, to track window state and position changes.
Jankyborders suits developers and power users running tiling window managers on macOS who want visual window delineation without sacrificing system performance. It is most useful in setups where window management is already automated through tools like Yabai, as the border system responds to window events from such managers. The project is designed for users who prioritize efficiency and want to avoid the overhead of more resource-intensive border solutions.
The project shows consistent maintenance with regular updates addressing bugs and adding refinements to border rendering and configuration options. Development activity demonstrates responsiveness to user-reported issues and steady iteration on the core border-drawing functionality. The codebase remains focused on its narrow purpose rather than expanding into broader window management features.
