Your question doesn't make sense except from a very, very narrow ideological perspective. It's useful to have an Open Source browser since: - most of the stan

Your question doesn't make sense except from a very, very narrow ideological perspective. It's useful to have an Open Source browser since: - most of the standards that a browser implements are also open standards - if it's under a permissive license, you can port it to either your own device, or unsupported devices. - proprietary browsers are influenced by business goals to do untoward things with regard to privacy and incompatible changes. - cross-platform abilities. I use Firefox across Mac OS, linux and Windows, though mainly Mac OS. Source: ex-Netscape,was a member of a well-known browser protocol committee.