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.
tawny tawney towny tan tannoy dawn tain tony tiny town tinny downy tunny tauon teeny toney townee townie taenia ten tun dan taeniae tin ton toon deny tune tuna down tone tine teen dean tyne
awny tawny fawny lawny any awn mawn downy fawn pawn winy waney lawn meany sawney shawn canny shanny many zany rainy sawn guanay fanny towny wany tawney gnawn dawn nanny yawn