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.
fleck flecky flack flick flock flocky flak folk flic floc flaky fluke folic flake fluky folky flakey flukey folkie flag flog
fleck lek leku leke leek leak flack lack lick flick hillock click clack gleek killock mullock plack pollack relock rowlock sleek talcky shlock cluck lock alack cleek alec belleek black bleak block bullock luck flecky flock ileac clock cowlick killick klick oleic pluck pollock rollick slack slick shellack shylock
file flea flee flew fley floe flue foley