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.
reloans relines realness reliance rellenos
loans reloans ballons gluons felons loins alans cleans clowns solons clons bullions hellions violones gallons cullions glans pylons callans plans zillions millions shalloons ulans billions tolans talons elans nylons silanes billons solans plains lallans blains balloons salons colons flans belons colonus villains gleans galleons galloons clans melons solions halons clonus colones clones flanes lions kalians elains loons llanos jillions saloons aloins lanes pleons eloins bouillons solanos pillions leans xylans mullions talions tolanes planes uhlans chalones lawns yulans