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.
prawned preowned pruned preened paranoid pyranoid pernod pronate preunite pyrenoid perennate print parent pronto pronota
prawned frowned yarned trained drained reearned preowned learned groaned grained crowned craned earned rained browned branned brained barned araneid darned drowned warned yearned
prawn paranoea paranoia pirana purana pyran