Download latest version of Firefox 64-bit
You will find information and easy download links on this page with 64-bit Mozilla. These programs are developer versions, you can download, try but there is no official support for them. The most important 64-bit Mozilla application is, of course, the 64-bit Firefox. You can always download the most updated version, and also the older versions, from this page. You can only install the 64-bit Firefox on 64-bit Windows vista/7/8 operating systems.
Firefox 64-bit versions