I am a very big fan of Mozilla Firefox. I love it for many reasons but the thing I love most about Firefox is the ability to add Plugins, Addons, and Extensions. Most of the addons are user contributed - Yes there are people out there who dedicate their time to making the web a better place & making it easier for guys like me to go about their daily lives.
I have compiled a list of the Top 8 Firefox Addons for Web Designers.
I hope you find it useful 