As a web designer, you deal with tons and tons of fonts every single day. Without organization and font management software, analyzing and choosing the perfect font for your website design is tedious and will seriously take a toll on your computer and patience. Basic font management software will allow you to organize your fonts, preview and compare them easily. More importantly, it will let you activate only the fonts you need, while leaving the others deactivated. It should also take care of issues like installing and uninstalling fonts, and diagnose and repair any font conflicts.
Think Vitamin: Font Management Tips for Web Designers