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.
matrass mattrass madrassa mattress madras maters matres madrassah matures madrasa matters madeiras madrasah motors mudras miters meters mitres metres madres metros madders maduros meeters meteors metiers midairs mooters mutters motorise mudders
trass matrass strass mattrass nutrias tuateras mattress tetras madrassa sutras buttress strays latrias betrays sataras votress toras straws yttrias stress truss daturas tress tuataras trays waitress