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.
tats tates teats tauts tatsoi tuts tets tots tits tads tattoos tatties dauts toads totes dawts titis ditas tutus toots datos toits touts doats tatouays dates dittos tuttis todays dattos tootsy tutees tutties ditties toadies tootsie titties dads tods dots teds dits dados dadas deads duads diets doits ditsy duets duits dites dotes deets tides
bats hats seats peats oats gnats lats meats goats kats gats coats cats heats wheats wats cheats tats vats beats qats teats doats rats pats neats mats moats ghats boats eats fats feats fiats chats whats shoats
tat tate tatouay tattie tattoo tatty tatted tattooed