Finicky

Finicky runs as a macOS default‑browser handler that routes each URL to a browser or application based on user‑defined rules. The configuration file, written in JavaScript or TypeScript, lets you specify matching patterns, rewrite URLs (for example forcing HTTPS or stripping tracking parameters), and select which browser to launch for each pattern. Handlers can use simple strings, arrays, regular expressions, or custom functions, providing fine‑grained control over routing logic.

Typical users are people who separate work and personal browsing or who need specific sites to open in particular browsers, such as using Firefox for social platforms while keeping professional tools in Chrome. The tool supports multiple browsers simultaneously and can be extended with browser extensions that add “open with Finicky” options to links.

Installation is available via a downloadable release or Homebrew cask, and the application opens a configuration window for troubleshooting. The project is MIT‑licensed, actively maintained, and includes documentation for migration from earlier versions and for building from source.