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.
rousseaus reseaus roses rooses rouses wrasses rosacea reassess reissues rises ruses rases raises resees resews reuses risus
rousseaus masseuse osseous reseaus seas
rousseau rouse arouse crosse crouse grouse trousseau rose ruse