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.
downtick deontic dunitic tonetic
antick downtick untack dunitic zoonotic kenotic deontic hypnotic mantic lunatic lentic quintic quantic kinetic genetic ontic venatic antic phonetic phenetic fanatic enatic biontic mannitic cantic tonetic untuck