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.
togas togs taigas tokays teguas togues dogs tugs tags tegs teggs takas degas tacks tacos takes tokes teaks toques tikkas daggas doggies degauss tax dugs taxa taxi tics dags daks digs docs
biogas togas yogas gas laogais gays gaes geegaws bagass gigas cocas cogs loggias logs nogs quaggas ocas goas sagas sequoias socas degas taigas gogos bogs wogs mogs biogs ragas ligase gags logos koas megass vigas hoggs hogs hookas gewgaws bogus jogs cocoas togs shogs fogs agas noggs oaks okas reggaes saigas soaks daggas dogs teguas yugas