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.
shotten shodden sheitan shaitan showdown chitin chiton chidden chutnee chutney
gotten rotten shotten ratteen potteen sitten litten ratten bitten fatten cotton kitten latten written batten mitten oaten patten poteen neoteny ten
shott shot chott shittah shitty shoat shoot shote shout