Brave is a web browser built to safeguard end-user privacy against tracking companies and intrusive advertisers while also providing a way for content producers to be paid for their work. According to Brendan Eich, co-founder of Brave Software, the web currently faces a "primal threat" caused by a growing conflict between users and the advertising companies so often necessary for authors to be compensated for the work they put online. In addition to their sheer intrusiveness, ads and trackers also increase the "page weight" of sites, which can lead to increased data charges for mobile users. The Brave homepage presents data showing that these costs add up to about $270 per year for the average mobile user. By default, Brave blocks these ads and trackers. Users may instead opt-in to a monthly contribution that Brave Software will distribute among sites the user has visited. Brave for mobile is available for iOS and Android devices. Beta releases of Brave for desktops are available for Windows, macOS, and several Linux distributions.