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.
laurel loreal loral leerily
jurel laurel saurel creel boreal barrel merely ariel areal riel curl rely jural hurly parrel knurly mural purl rural carrel reel burly sorely sourly surely surreal dourly ureal churl nurl burl aural ferrel surly direly sorrel sural furl sorel gruel real curly hurl irreal barely choreal dural carrell cruel quarrel hourly loreal morel knurl neural oriel purely rarely cereal yarely
laura laurae lar slur glare claro flare blur laari lair laree lari lear leary liar blare lour blurry loury flurry lure clary alar glary alary slurry