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.
cliques calques claques cloques colloquies calicoes collogues cleeks clicks colics clucks colleagues kylikes colugos calicos cowlicks calix kliks culex clogs clags calks glugs clacks cloaks clocks cologs gleeks klicks caulks cloacas
cliques laliques reliques siliques calques claques cloques colloquies plaques pulques
clique cliquey cliquy calque claque cloque