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.
bailiffs boiloffs blaffs bluffs beliefs believes bolivias
cliffs gliffs bailiffs selloffs luffs alifs beliefs blaffs bluffs boiloffs falloffs califs kalifs lowlifes pilaffs reliefs fluffs sluffs