Wikipedia
Fasterfox
Fasterfox is a Mozilla Firefox extension that provides an interface for tweaking some performance related settings, such as browser network connection, cache, and timings. The extension also provides an optional controversial feature which forces link prefetching.
The original extension has not been maintained by the original developer Tony Gentilcore since 2007, and is not compatible with Firefox 3.0 or later. However, there are alternative extensions that are compatible with the latest versions of Firefox. As of August 2008, rights to the extension were sold to (Rsccman Production) "Fasterfox", who have implemented support for newer Firefox releases.