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.
furcate frigate forgat fracti forecaddie fragged freaked frocked virgate variegate forgot forked foregut frigged frogged frugged
furcate arcade arcuate bearcat ergate virgate loricate marcato muricate surcoat suricate