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.
sannop sannup snoop snoopy senopia sinopia sinopie snap snip sneap snipe sunup snappy snippy
sannop knop nope canopy sannup snoop
sain sane sauna sawn sawney senna sonny sunn sunna sunnah sunny asana