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.
cattails coattails cattalos cattaloes catalos catalase cataloes cuttles coatless catalyze cuittles caudillos caudles guttles kettles kittles cadelles gateless cutlas ketols
cattails tails details coattails retails rattails tils rutiles catalos mutuals stales petals tiles talls vitals steals motiles retiles stalls stiles cattalos talus tales toils nautilus metals ratals rituals buttals tills taels talas teals stills totals
cattail cattalo catalo cattily cattle coattail