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.
stound stoned stunned stand stunt staned stained standee soddened stent stint satinet saddened stannite
redound stound tondi tondo toned tuned atoned attuned buttoned cottoned ratooned rattooned retuned rotund rotunda stoned
seton soudan soutane stone stoney stony stun astony