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.
carices crises carses cruces cruises crazies coerces coriaceous curacies carouses caresses corses crasis crisis cruses crases crazes curses krises graces crozes crosses courses cresses creases creeses griseous karosses cuirasses carassows grazes gorses coryzas grasses greases grecize grosses grouses kerseys
rices trices murices orrices prices varices carices graces braces sources traces hyraces lorises arises rerises morrises derrises mercies farces krises prises brises rises terces truces terraces tierces races farcies merises crises pierces orrises merces frizes arrises prizes cerises frises forces parises cruces hybrises irises boraces coerces sherrises
caries carious carries scarce scariose scarious