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.
sambo samba same seam sumo seamy sim som sum seem seme semi sima smew soma some
ambo sambo mambo gumbo whamo gambe umbo gamba dumbo gombo gamb samba limbo cameo mamba lamby combo bamboo camo jumbo lamb jamb ammo iambi iamb embow bimbo jambe tomboy whammo shamoy