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.
tony towny toney ton tone town tiny toon tonne teeny downy tauon tunny tinny tawny tannoy townee tawney toonie townie don tan tin ten tun tonneau tain down tuna done teen dona tine tune deny tyne donee donna donne tenia tinea
bony phony cony goony loony mony moony peony pony tony on