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.