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.
salify saliva salvia self salve salvo sluff sulfo slavey sleigh slieve sylphy selloff sloughy
jellify jollify vilify coalify salify mollify qualify nullify life gliff cliffy lief bailiff alif belief calif gulfy kalif cliff relief lowlife
sal sail sale sall sallow sallowy sally saul seal soli syli