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.
blottier blotter bloater blatter balloter bloodier bolter belter bleater billeter blighter bolder balder blader bladder bleeder boulder bowlder builder bladdery bouldery balladeer
blottier plottier sluttier slittier slitter joltier lottery lotter littery litter flutter flytier blatter platier allotter cluttery glitter guiltier blotter saltier slatier slotter clattery miltier letter maltier faultier flatter flattery glittery flitter floatier clatter plotter fluttery clutter gleetier reletter siltier sleetier flutier vaultier platter latter