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.
loos loose looeys looies lows lose loss lousy loess louse lossy lowse louis louies lis les las leys lays leis loci lies lase laws lues leas lass less lyse lees hylas lassi lasso lease lieus luaus lyssa wyles
boos coos goos loos moos poos zoos woos shoos os