Finicky

Finicky is a free macOS application that functions as a browser router, allowing users to direct each link to a specific browser based on configurable rules. By setting Finicky as the system default browser, it intercepts all URL requests and applies patterns, wildcards, or custom schemes to decide whether a link should open in Safari, Chrome, Firefox, or another installed browser.

The app offers a graphical rule editor for basic routing and supports a JavaScript or TypeScript configuration file for advanced users, enabling match functions, URL rewrites, and conditional logic that can consider the originating application, window title, or other context. Browser profiles can be targeted, so different profiles within the same browser can be used for work versus personal browsing.

Finicky includes a built‑in URL tester that shows which rule would apply to a given link, and it works on macOS 12 and later. The software is open source, stable, and intended for developers or power users who need fine‑grained control over how links are opened on their Mac.