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.
perkier porkier prickier precure parker porker pricker progger
barkier corkier quirkier larkier jerkier porkier forkier dorkier perkier sarkier mirkier murkier trickier marker porker brickier parker larker chirker prickier darker mirker rockier rookier shirker broker creakier lurker murker croakier freakier reekier jerker brakier worker sharker forker raker barker corker burker shriekier