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.
negates nougats neckties naugahydes nuggets nicads
gates ligates agates negates legates gats gaits skates goatees legatees equates locates hogties legatos coatees coequates goats cates liquates fugatos loggats nougats vacates zygotes