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.
hareem harem harm herm hermae
hareem rem ream bireme bream formee harem cream creme proem dream
hare haar hair hairy harrow harry hear here hire hiree hoar hoary