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.
bet beat beet beta betta beaut bat but bot bit beauty bed butt bout bate bott boot bide bedu bute bitt bade boat bite batt bota byte bode baht bait bead butty biota bawty bedew boite battu batty baaed beady beedi bitty booty buteo butte booed baddie bateau battue bawtie bootee bootie bought