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.
careens carns greens cairns carinas carnies carneys curns karns corns greenies carrions greenness crones croons cranes crowns cornus currans cronies garrons corneous guaranas greyness crannies currency guaranis guaranies kirns queerness grins kerns grans kroons groans groins grains kernes querns corneas cornice coronas groynes gurneys
boreens careens preens tureens terreens moreens treens greens serenes barrens mureins reins gyrenes wrens sirens sereins arenes pyrenes arenas phrensy syrens pereons terrenes brens triens warrens