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.
plague plaguey plaguy plaque plicae pulque plug plack plica pluck polka plucky palooka pealike pollack
league colleague plague claque collogue plaguey plaguy plaque dialogue duologue
pilau pilaw play plea pula splay