Brave is a free and open-source web browser developed by Brave Software, Inc. based on the Chromium web browser. The browser blocks ads and website trackers. The company has proposed adopting a pay-to-surf business model in a future version of the browser. As of 2018, Brave supports Windows, macOS, Linux, Android, and iOS. The current version features five search engines by default, including their partner, DuckDuckGo.