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.
calque clique cloque claque cliquey cliquy calk colloquy collogue cluck caulk cleek colleague colloquia calico colugo cloacae quaylike
pulque calque fluke claque clique cliquey cloque lalique plaque relique siliquae silique
call calla callee callow calo caul coal coala coaly scale scall scaly