Waterfox is high performance 64-Bit version of Firefox.

The Firefox source code is taken and compiled to run specifically for 64-Bit Windows computers.

To make Waterfox stand out a bit more, it’s compiled with optimizations so that it will run more efficiently and faster than just compiling Firefox as a 64-Bit program.

New in this version:

Support for SPDY networking protocol v3

WebGL enhancements, including compressed textures for better performance

Optimized memory usage for add-ons

java script  debugger integrated into developer tools

New layout view added to Inspector

High precision event timer implemented

The CSS word-break property has been implemented.

New responsive design tool allows web developers to switch between desktop and mobile views of sites

Native support for the Opus audio codec added

The

The element now supports the media attribute

Focus rings keep growing when repeatedly tabbing through elements (720987)

Fixed any remaining installer issues

Added optional portable version (useful for users without administrator permissions)

Optional AVG Security Search

Intense Profile-Guided Optimisation

May require Microsoft Visual C++ 2010 Redistributable Package installed.

Note Option to install AVG Toolbar or not.