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.
bagass bagasse bags biogas baggies begs bugs bigs bogs bogus bigos backs beaks biogs bakes begaze bekiss backsaw because biggies buggies
megass bagass gas teguas degauss daggas sagas ragas ligase loggias megasse laogais gags gaes gassy goas yogas gauss gays quass biogas togas taigas geegaws degas vigas saigas reggaes gewgaws agas oquassa quaggas bagasse jackass gigas yugas