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.
hemic haemic humic hammock hommock hummock hummocky
emic chemic haemic demic hemic mic mick vomica comic domic gimmick ohmic mica gamic limbic gnomic neumic oomiac humic mimic umiac iambic chymic
hem haem heme homie ahem rheme