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.
erugos aerugos ergs eurokies eurokous ericas
aerugos erugos turquois trigos sorgos pargos gregos cargoes viragos viragoes frugs forgoes foregoes farragoes burgoos burgs bourgs argosy rugs rugous rugose rugosa irriguous cargos largos sargos drugs trugs shrugs