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.
plane plan plain pelon plena pleon pylon paulin poleyn pollen pillion pollinia paulownia
lane alane tolane silane plane tolan glean lean loan clean lawn lain blawn llano byline elain aline clan beeline alone cauline villain kalian lallan milline plain eolian line lone reline towline ulan chalone hyaline clone blain flan cline bowline feline elan xylan solano valine liane violone callan lune aeolian delaine xylene jawline saline reloan alan colone guyline kaoline maline moline plan ralline solan slain uhlan ulnae choline yulan
pilau pilaw play plea pula splay