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.
howks hooks hocks hokes hawks hookas hoicks hogs hockeys hawkies hookeys hookies hawkeys hookahs hikes hucks hocus hacks hoggs hecks hakes hicks haiks hakus haikus hackees hackies hacksaw hickeys hickies hags hoax hugs
howks gowks hocks hawks books bocks gooks cows hokes locks mocks knocks okas nooks rocks scows socks sooks zooks dawks tokes chocks chooks shooks yokes pocks hookas jocks oaks jokes jouks cocks cokes cooks gawks hooks kooks looks mokes nocks okes pokes rooks soaks sokes souks zouks docks woks chokes shocks yocks yoks
howk hawk hawkey hawkie hock hockey hoke hokey hokku hook hooka hookah hookey hooky