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.
sleetier saltier siltier slatier slittier sluttier slider slater salter soldier slotter solider saluter sledder saltire slitter soldiery solder sultry salutary solidary solitary zoolater
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