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.
cloques claques cliques calques colloquies collogues clogs calicoes cloaks cologs clocks clucks cleeks colleagues calicos cloacas colugos glaucous calks clags culex glugs kilogauss gleeks gloggs caulks colics clicks clacks galagos glucose kylikes
cloques calques claques cliques collogues colloquies laliques plaques pulques reliques siliques dialogues duologues
cloque calque claque clique cliquey cliquy