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.
tatar tuatara tater datary tauter tatter tuatera tattier tattooer titer titre toter dater tetri tutor datura titter tooter totter tetter teeter dotter touter tawdry dietary dottier tottery
tatar tar quatre tahr gater guitar tare taro cottar attar satyr beater rotary neater sitar rater star pater datary oater dietary tater water chadar later cuatro tear retear gator cater heater coater votary viator satara hater eater seater radar stair ottar stare notary dater mater feater boater tuatara wheatear cheater
tat data tate tatouay tattie tattoo tatty taut teat stat state statue tatted tattooed tauted teated