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.
boneset boniest bonniest bounced
boneset nest funest funnest funniest phoniest vainest viniest finniest honesty ginniest canniest keenest liniest luniest onset mooniest rainiest runniest sanest sunniest zaniest dunnest tawniest tiniest toniest unset wannest wenniest whinniest sheeniest puniest fenniest finest moonset fainest bonniest boniest neist knesset veiniest fawniest honest inset jonesed gooniest leanest looniest meanest piniest punniest renest cineast soonest sunset downiest tannest teeniest tinniest unseat waniest weeniest whiniest winiest shiniest
bones banes benes bines bonnes bonsai bonus bonze boons ebons