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.
pharaohs pharos phrase gheraoes pharisee varas faros varias phoresy various gharris farrows vars gharries fiars frays frows frass fairs froes varus fears vairs fares vrows feuars forays fraise frowsy varies vireos vrouws
pharaohs gheraoes hoorahs horahs hurrahs gerahs jarrahs pariahs praos sirrahs surahs dourahs torahs shariahs ras