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.
beta betta bet bead bota beat beet biota beaut beady beauty bateau but bad bit bot bat bed batteau bitt bade baud bout bute bedu bawd butt bott boat baht bite bait bode byte batt bide boot bate bitty butty baaed bawdy baddy booed bawty batty booty boite beedi bedew butte battu buteo
beta eta feta geta meta pieta seta zeta chaeta ta et