Swiftfox is an optimized build of Mozilla Firefox. Swiftfox has builds for both AMD and Intel processors and is based on the most cutting edge Firefox source code available.
Help is available in the Swiftfox Forum. If you have questions or are having difficulty with any aspect of using Swiftfox please leave a post on the forum and I or one of the forum members will provide assistance.
There is now an installer available that is distro independent. It is a script that downloads and installs Swiftfox in the /opt directory and attempts to use existing Firefox plugins. The installer is probably the best way for most users to install Swiftfox. If your distro is Debian based you will want to install using the deb files as the apt repository will provide automatic updating. More info is available at the deb file page.
Existing Firefox plugins should work with no additional configuration if you use the installer or deb file. If you install using the tarball or your plugins are not working you will want to make sure plugins are located in the directory ~/.mozilla/plugins or swiftfox/plugins. If you need any help please visit the Swiftfox Forum.