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.
glaive clave glove cleave calve clavi clove gliff clivia
glaive belive slieve slavey salve leave lieve live alive believe lave halve valve calve clave cleave olive relieve relive slave sleave deleave
gaily gala galah glia guaiacol laical laically