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.
humic hemic haemic hummock hummocky humbug hammock hommock
humic neumic mic chemic domic sumac ohmic mica mick emic vomica haemic hemic iambic mimic gnomic gimmick oomiac comic demic gamic umiac limbic chymic