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.
grille grill gorilla krill grail guerilla gorily guerrilla cariole criollo carriole carle goral growl graal gruel curule creole curlew growly grayly curial gooral greyly carrell corolla cruelly
rille rouille zorille grille braille krill oriole guerilla girolle perilla frailly frill birle rill frilly zorilla grill carriole trill shrill prill gorilla barilla variole rile brill cariole guerrilla virile morelle brillo drill zorillo puerile riley dariole hydrilla trolley shrilly