fluor ☆
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Description:
Change the behavior of the fn keys depending on the active application
Type: Cask  |  Latest Version: 2.5.1@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Productivity
Tags: macos keyboard productivity utility automation
Install: brew install --cask fluor
About:
Fluor is a macOS utility that dynamically remaps function key behavior based on the currently active application. It allows users to set whether the top row of keys acts as standard function keys (F1-F12) or as media/brightness controls on a per-app basis. This provides a seamless workflow by automatically adapting key behavior to the context of the active software.
Key Features:
  • Per-application function key mapping
  • Automatic switching based on active window
  • Menu bar utility for easy management
  • Supports standard function keys and media controls
Use Cases:
  • Developers who need standard F-keys in their IDE but media controls in music apps
  • Users wanting to customize keyboard behavior for specific applications
  • Switching between function key modes without manual toggling
Alternatives:
  • BetterTouchTool – More comprehensive but heavier; Fluor is focused specifically on function key behavior
  • Karabiner-Elements – More complex configuration; Fluor offers simpler per-app switching
Version History
Detected Version Rev Change Commit
Sep 15, 2025 11:39am 2.5.0 0 VERSION_BUMP 5198e18f
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