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.
saunaed saned sunned sained sundae sand sned sound sandy senate sinned signed seined sundew send zoned saint scend sonde suint synod snide sente santo snood sanity sennet sonata sonnet zonate zooned sienite sinuate zenaida
saunaed funned hennaed gunned lunate punned ruined sundae sunned dunned tuned tunned shunned