I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
cutoff caitiff codify
toff cutoff shutoff setoff putoff dieoff doff teff tiff tofu tuff caitiff leadoff staff stiff stuff toffy
cut couteau cute cutey cutie cutty acute scut scuta scute