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.
spotted spitted spatted spouted spited septate sopited septette septet spaded speeded spudded zapateado
repotted potted spotted patted petted pitted pouted putted puttied coopted opted pipetted spatted spitted spouted
spotty spot sapota sapote spout