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.
hordein harden hirudin hearten harridan
hordein burden turdine sordino verdin harden hirudin cretin garden gradin guardian nardine ordain pardine reordain sardine sordine sordini sourdine warden