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.
dits duits diets ditsy doits dites ditas dittos dots ditz tits deities ditties dauts dates toits deets didos dotes duets titis dawts datos ditzy doats todies tidies duties didoes dattos didies diodes toadies doodies tedious duteous dowdies titties toddies dauties dawties teddies daddies duds tads teds tats tots tuts tets tods dads dodos toots tides dados dadas teats deeds touts tauts totes toads tates duads deads dudes tutus
aits quits chits whits toits duits dits suits writs pits nits knits lits quoits kits baits gaits gits its hits fits bits sits zits doits tits waits wits shits
dit dita dite ditto ditty dittoed