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.
quantize quants quintes counties canities quints qanats quintas gunites candies coonties quinnats kainites gahnites countess quinoids cants cunts canids cantos cantus contes counts kentes
scientize quantize chanties unitize dainties sonnetize sanitize punties panties hypnotize monetize counties coonties entice bounties banties aunties unties shanties
quant quanta qanat quaint quint quinta quinte aquanaut