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.
prune prone pyrone purine pyrene pirn porn perinea paranoea prawn prion porny preen pyran purin porno pirana parian pereon pernio purana perron hyperon pereion paranoia
prune rune run krone kerne cornea koruna borane barney arene ruin gyrene bourne crone neurone murine lierne carney bruin pyrene rerun serene dourine taurine terrane terrine trine trone chorine narine brine carnie furane terrene tourney drone terne sciurine serine purine pyrone gurney byrnie crane erne urine triune ferine irone journey burnie korun borne koruny larine marine murrine neurine prone shrine