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.
pray pry proa prao prey prau para peery perry parae parry perea pereia pariah per pur pro par pear pyre puri peer pare pair peri pore pure pier pree parr poor pere pour prow purr pyro hyper pareo pareu poori puree
ray array bewray bray foray fray hooray hurray gray moray pray deray dray tray