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.
farle farl fairly ferlie ferule variole ferrule furl frill frail feral ferly ferial virile ferrel frilly freely ferulae fierily frailly furrily gharial variola virl
farle parle carle birle burley curlew barley hurley nearly gnarl merle role rile marl rule aril early parol pearl prole pyrrole charley chorale virile farl aryl morale pearly puerile parley parole ferrule carol rale ferlie orle charlie dearly gnarly marly jarl curule earl carl girlie harl ferule yearly
far faerie faery fair fairy fare faro farrow fear fiar afar