Flow is a web browser with a proprietary browser engine. Flow is developed by the Ekioh company, which has made simple browsers for set-top boxes and other embedded systems. Flow uses multithreading for page layout – multiple page elements are positioned concurrently. Flow draws HTML elements directly on the GPU – this dramatically improves rendering performance and helps keep the CPU free for faster JavaScript execution. Flow is a recent entrant to the browser market. Ekioh selected SpiderMonkey from the Mozilla project for its JavaScript engine, giving it support for JavaScript that is at parity with Firefox. The first beta was in December 2020. Ekioh is focusing on its use in embedded systems, including a beta version for the Raspberry Pi. As of November 2023, it is still in beta.