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.
carets carts carats curets cartes cruets carates caritas carrots creates garrets karts cards crits creds curettes karats greats curtsy crudes quarts cairds courts greets credos crates creeds curtsey cardias curtesy quartes croutes curites curates garotes quartos karates crowdies courtesy corrodes garottes garrotes keiretsu cowrites corrades corodies curds grits grots cords cruds garrottes courteous corrodies grides quartz krauts griots groats grates grouts grades crowds korats greeds kraits gratis guards quirts gourdes grottos corridas grottoes
barrets trets rets carets frets garrets curets terrets berets burets ferrets turrets arts frats greats greets tarts courts karts brats curtsy borts artsy airts carrots treats hurts morts boarts drats parietes vertus gourdes aortas rats shreds shirts charts worrits warts tortes territs parrots derats sorts prats grots merdes trots crits farts cartes bruts keiretsu reds pierrots grits kurtas merits marts fortis parts cruets hordes korats brits hearts quartes ports virtus girts harts forts rots ruts bardes quartos fortes verts darts quirts aretes orts frits nerts jurats creds karats dirts carats carts tortas tarots torts writs certes quarts whorts worts cherts shorts yurts
caret cared carrot carroty cart carte cored cred cruet creed curet acarid acred ecarte scared scart carried caried cardio cried cardia card carate carat caird create credo cardiae cured curette acaroid agreed ocreate scarred screed