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saragordic

saragordic/window-sweaters

A macOS menu-bar app that draws knitted yarn borders around your windows, with per-app colourways and patterns.

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What is it?

Window Sweaters is a macOS menu-bar app that adds knitted-looking borders to application windows. The border colours and patterns can be chosen per app, so each app gets its own look, or you can switch to a shared Zigzag style that takes colours from each app's icon.

From the menu-bar yarn icon you can change the style, pattern, border width and stitch size, pause the borders, or quit. Individual apps can be left bare by unticking them in the Apps list, and a Turn Off for All Apps option lets you enable borders only for selected apps. Custom colourways are defined in an apps.conf file, and custom PNG charts can replace the built-in patterns.

The project is built on JankyBorders by Felix Kratz. It requires macOS 13 or later and uses Accessibility permission to follow the focused window. It relies on private macOS window APIs, so system updates may affect behaviour. The app is not yet notarized by Apple.

Key features

  • 01Knitted yarn borders around application windows
  • 02Per-app colourways with 37 hand-picked custom sweaters
  • 03Shared Zigzag style with colours sampled from app icons
  • 04Menu-bar controls for style, pattern, border width and stitch size
  • 05Per-app on/off toggles and custom colourways via apps.conf
  • 06Custom PNG charts to replace built-in patterns

Use cases

  • Telling apart windows of similar apps at a glance
  • Giving a personalised, cosy look to a macOS desktop
  • Turning borders on for only a few selected apps

Topics

#macos#menubar-app#desktop-customization#window-management#objective-c#knitting#macos-app#menubar

FAQ

What is window-sweaters?
A macOS menu-bar app that draws knitted yarn borders around your windows, with per-app colourways and patterns. Window Sweaters is a macOS menu-bar app that adds knitted-looking borders to application windows. The border colours and patterns can be chosen per app, so each app gets its own look, or you can switch to a shared Zigzag style that takes colours from each app's icon.
Is window-sweaters free to use? What license does it have?
window-sweaters is open source under the GPL-3.0 license. Check the license terms before using it in commercial products.
Is window-sweaters still maintained?
Updated within 6 months. The last commit to window-sweaters was on Sep 21, 2026.
What can I use window-sweaters for?
Telling apart windows of similar apps at a glance Giving a personalised, cosy look to a macOS desktop Turning borders on for only a few selected apps
Where can I get window-sweaters?
The source code and installation instructions are on GitHub: https://github.com/saragordic/window-sweaters

Summary generated by AI from the project's README. GitHub stats refresh daily.

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