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.
sleeve sleave slieve salve slave solve slavey salvo selva silva sylva saliva salvia silvae sleigh sylvae
sleeve leave levee lieve believe helve cleave releve relieve sleave slieve deleave delve shelve
sale seel seely slew sloe slue sole solei isle