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.
quintal quantal quaintly quintile quantally quinoidal quantile cantal cantala gauntly cuneately cantle kindle kindly gonadal kantele
quintal ventail dental cental pintle neonatal lintol notal entail faintly fantail fontal natal jointly genital cantal cantala quaintly quantal lanital lintel mental pintail rental saintly wintle
quint quinta quinte quaint quant quanta quinate quinnat quinoid quoined equinity squinnied squint squinty