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.
whims whimsy whimsey whams whomso whammies wames wamus wombs wammus
hims whims shims chimbs aims shams chimes chams limbs simas rimes bimas vims hams hems hums limas dimes whimsy chums limes mimes nims ohms pimas rims sims dims whams limos times maims
whim wham whammo whammy whamo whom swim swimmy