Meridian is an experimental web browser for MacOS built on the GPUI framework and Servo engine, allowing for a highly configurable browsing experience with customizable fonts, keybinds, colors, and tabs. Written in Rust, Meridian utilizes Servo to manage web pages and browser state, while GPUI handles the browser's chrome. The project is open to contributions and is developed on Tangled, with a separate library called gpui-servo enabling the integration of Servo with GPUI, making it possible for others to create Servo-based browsers in GPUI.