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.
slipt slipout slept sliped slipped salpid sloped slapped slopped
clipt slipt lept clapt clept coalpit galipot gallipot yclept lilliput pulpit slept talipot shilpit
slip slipe slippy salp salpa salpae slap slop slope sloppy slype