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.
limbo limb limo limba limbi limby lime limy lima lamb lamby limey lambie lam lum lama lame loam loom luma ylem
limbo bimbo umbo dumbo sambo mimeo ambo bamboo embow iamb jumbo combo gombo gumbo limb limba limbi limby limo mambo nimbi daimio tomboy chimb