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.
famulus fumulus fameless families foamless females fimbles fumbles fumeless
famulus fumulus hamulus cumulus limulus tumulus mauls mules mulls emulous hamauls hamulous gemmules cumulous ramulous tumulous