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.
augurs auguries agars aggers aggros agoras agrees agrias agarose aggress acres acarus across
augurs muggurs foggers buggers laggers aggers gaggers curs gurus secures gars ligures curse joggers jaguars currs vigours guars jaggers recurs sugars eggars chiggers waggers muggers taggers diggers liquors becurse saggars luggers scaurs naggers faquirs ogres rigors ruggers gaurs agars hoggers jiggers figures kauris vigors keggers voguers jagras eagres seggars huggers queuers kouros kurus aggros eggers leaguers liqueurs cougars riggers daggers saggers cigars rigours recourse loggers niggers scours beggars course muggars baggers doggers tuggers cures chequers chuggers