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.
gleetier guiltier glider gauleiter gloater glitter gladier glittery golder kilter colter kelter coulter clutter clouter gladder clatter guilder quilter clattery cloddier cloudier cluttery coleader collider killdeer colder kultur
gleetier sleetier welter slittier siltier flytier slatier saltier plottier platier muleteer melter kelter guiltier gauleiter joltier vaultier flutier reletter letter fleeter faultier blottier bleater billeter belter maltier miltier pelter pleater floatier sluttier shelter
gleet gleety galette glede gleed aglet