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.
manly mainly meanly manually manila manual manilla manille moonily menially hymnal menial hymeneally hymenal hymeneal hymenial
leanly manly meanly wanly anal punily sanely onlay panel lonely moonily canal gainly bonnily faunally zonally biannually anally tonally queenly inly finely venally henley vainly phonily funnily tinily biennially cannily lanely sunnily banally anil mainly venially inlay finally hymeneally manually banal annually lineally genially keenly loonily menially nounally only penally rainily sonly zanily tawnily tinnily unlay shinily
man main mana mane mania manna mano many maun mawn mean meanie meany moan