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.
stater stator sedater staider stature stouter stutter statuary steadier seedeater citator studier citatory sudatory sudatoria
dater tater stater toadeater sedater seedeater tuatera daughter tetter titter toter tottery doughtier goddaughter laudator radiator citator dieter dotier stator stutter deader doter tooter deter tatar tatter tattier tauter teeter touter podiatry mediator totter betatter dottier rotator dotter stouter titer
state statue stat stead stott stot stoat stet steady stadia staid stade sotted seated satiety sated estate