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.
trounce trance trones truancy triunes trueness tourneys tarriance ternes trines tronas drones turions durance trienes dourines terranes dourness taurines trainees trannies terrines terrenes tyrannies tyrannize teariness trans turns tarriness terns tyrannise tarns tyrannous treens triens drowns trains diurons dryness durions tureens