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.
tets teats tits tuts teds tots tats tides totes dotes diets tauts tates tutus dites deets titis duets touts toits dates toots dittos tutees tidies duties tatsoi tuttis teiids todies dattos tootsy tattoos duteous toadies tedious titties ditties toddies tootsie dauties teddies dawties tutties tatties deities tods tads tatouays dots dits dauts ditas toads datos doats deads ditsy duits dawts deeds dudes doits
beets keets whets weets duets deets sets poets pets nets meets lets leets quiets jets bets gets hets haets vets fets rets suets diets tets wets sheets