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.
diacid deicide diced dacite decide deiced disced dizzied daisied dayside decidua deciduae dissuade dazed tacit deuced dissed disseat
hypoacid acid diacid lucid said aced acidy biocide faced viscid decide laced maced peaced mucid muscid naysaid paced raced suicide deicide missaid resaid tacit
dace deice diazo dice dicey disci ditas