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.
sucre score scare screw scree square sucker scarey squire screwy soucar secure scry suckier scoriae scar scary scour scaur sacra sugar scoria scurry sicker sowcar sacker scarry sugary cicoree saguaro
lucre sucre decare fiacre scree scare ocrea core crew cure curie quare care quire secure ligure acre maugre mucor mucro nacre require score screw soucar squire figure square daycare decree