Vouch by Vouch, Firefox user 12165627

Finding discount codes is time-consuming and repetitive; Vouch takes the hassle out of looking for a discount code by automatically finding AND trying each code for you when you're at the store's checkout. No more copying & pasting. It'll even apply the best code for you, with the biggest discount.

Vouch will also instantly reveal all codes on leading discount code websites - no need to click to reveal each one.

Currently supports over 1,200 stores; more are being added every day. 100% free, no catches, no spyware, no toolbars. Just good old money-saving.