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.
nineties nonets neonates
nineties gentes shanties unties tonettes dinettes sonnetize rentes panties aunties banties bounties vanities genettes annuities coonties canities counties kentes lenities lunettes monetise monetize punties sanities dainties tenuities unities chanties yentes