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.
gout gouty gut got goat gutty gutta guttae goatee god cut gat cot couteau gate coot gowd gude goad good cute gait quit guid gaud koto coat cote gaudy quota cutty quite cutie quate goody quiet coude coati kotow cotta guide quoit cutey quote
bout gout lout knout out pout rout tout shout ut