Fasterfox is a Firefox add-on that applies a variety of performance and network tweaks to improve rendering speed and network performance. It includes 4 presets and an option for advanced users that allows you to tweak settings for HTTP connections, HTTP Pipelining, cache and more. Fasterfox also includes a prefetch feature, that utilizes your idle bandwidth and download linked pages in the background, so that they can load instantly when you click on the link.
Fasterfox - performance and network tweaks for Firefox.
* Prefetch Links
Dynamic speed increases can be obtained with Fasterfox's unique prefetching mechanism, which recycles idle bandwidth by silently loading and caching all of the links on the page you are browsing.
* Tweak Network
Fasterfox allows you to tweak many network and rendering settings such as simultaneous connections, pipelining, cache, DNS cache, and initial paint delay.
* Page Load Timer
A millisecond accurate page load timer tests the effectiveness of your settings.
* Block Popups
A popup blocker for popups initiated by Flash plug-ins is also included.

The license of this software is Freeware, you can free download and free use this browser tool software.