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.
zits zitis sits cites suits situs zetas sites zooids suites cities sets sots zeds stows satis stays stoss seats sadis soots suets setts sides saids stoas stews cetes cedis sties sates
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