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.
tonlet townlet tonality toenailed tunneled tunnelled download
veinlet inlet moonlet runlet tonlet townlet unlet knelt annulet veinulet moonlit penult sunlit unled unlit
toenail tonal tonally atonal atonally stonily