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.
borts boarts borates bruts bortz brats brits burets boards berets bruits brutes britts barytes berates barrets borides brights barytas barites berettas burettes birettas brads bards birds burds birrettas bourrides berrettas barrettes beards bardes brides broads bredes braids breads broods breeds birdies burdies byroads hybrids brattice burritos
borts ports morts orts shorts worts whorts sorts forts torts trouts carrots ferrets grots writs fortes verts carts heriots vertus virtus routs merits barrets pierrots korats fords nerts grouts lords artsy warts farts quartos roots sords tarts boarts sheroots cherts charts garrotes prats words parrots tortes territs dirts riots droits rats darts rotas carats trets garotes berets rots parts rotis rets grits cartes frats frits harts griots rotes crits karts curtsy quartes quarts hurts quirts bruts marts bortz worrits frets courts garrets arts cords fiords shirts girts brits jurats brats groats certes curets fortis kurtas airts aortas carets burets rotos ruts chords karats drats tarots terrets tortas hearts trots turrets chariots cheroots derats yurts
borty bort board boart borate bored boride bourride brat bratty brit britt brut brute abort