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.
crosse cross crouse carouse carse corse gross croze cress curse crass crows cruse grouse curios crissa course caress creese cressy kaross cruise coarse crease cuirass curious carious curiosa crus cors cars cris curs carassow curassow craws cares grass cores carrs currs croci coirs crews cries gorse craze cures grows kersey coerce creasy karoos grease cooers curies caries grassy guiros kouros carries corries cowries curries karroos
crosse reissue prose morse kaross crouse gross rose rouse wrasse cross ariose arose drossy serosae torose rerose triose prossie arouse brassie horse porose morose grouse roose gorse carouse gyrose corse brose erose browse dross cirrose drowse rearouse torse pross worse