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.
samba sambo same seam zamia seamy sim som sum seme semi sima smew soma some sumo seem
mamba gamba samba ama sambo jambe ambo rumba mambo iambi iamb mama limba lamby lama goombah gambia llama amah amia goombay cambia cumbia gama gamay gamb gambe gamma mamma lamb jamb lamia embay zamia