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.
rancid rainiest reincite rinsed runniest
rancid minced winced zinced pounced ponced nuanced nonacid monoacid monacid lanced bounced coincide jounced jaunced genocide fenced fancied synced danced chanced
rance brans uranias ranees ranis rawness roans ruanas rains crannies cranes grannies grans prance trance trannies trans uranous