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.
umiac umiack umiak umiaq
oomiac umiac mac mic chemic umiak gnomic humic tambac gamic demic comic smack gimmick oomiack mimic iambic ohmic mack limbic sumac vomica emic amiga mick mica haemic oomiak neumic domic tombac hemic umiack umiaq chymic