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.
tomboys tombs toms tomes dumbos duomos tommies doms tams tames teams dumbs times domes tamis dooms doums teems doumas tammies timeous tumesce tummies
tomboys ambos umbos dumbos mambos mamboes limbos gumbos goombays gombos combos jumbos embows emboss embays bimbos bimboes sambos bamboos shamoys mos