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.
spouted spotted spited sopited spatted spitted spudded septet spaded septate speeded septette zapateado
spouted pouted potted putted coopted opted repotted reputed spotted deputed
spout spot sapota sapote spotty sputa