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.
kalif calif kaliph calf coalify qualify cliff gliff kloof caliph cliffy clef golf gulf
calif kalif alif bailiff relief belief mollify lief qualify life alef alfa half jellify jollify calf cliff coalify gliff vilify lowlife nullify salify