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.
crosses grosses cresses karosses carouses caresses crozes curses crases crises carses cruses corses cuirasses creeses grasses grouses creases cruises courses curassows carassows crazes crasis cruces krises gorses crisis grosze carices coerces crazies kerseys greases curacies griseous grosz coriaceous graces grazes groszy coryzas
crosses drosses prosses grosses karosses reassess presses pharoses neuroses caresses brasses heiresses roses prissies cresses brisses arouses broses xeroses brassies reissues eroses browses wrasses duresses trasses trioses worses grouses proses carouses peeresses dresses soroses prossies frasses rooses morasses corses rouses cuirasses seeresses saroses viroses rearouses gorses horses harasses grasses prisses drowses torses tresses trusses chorusses
cross crosse crass cress cressy crissa crouse crows gross across