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.
quayside gussied quizzed cased caste quest casita caused cosied cussed gassed guised gusset keyset
quayside dayside wayside side aside beside mysid naysaid reside residue seaside
quays quais quasi quass quassia queasy queys aquas quags oquassa