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.
arcked arcade argued arcadia arcuate arrogate
racked arcked crocked wrecked wricked rucked ricked tracked reracked bricked cracked trocked tricked wracked cricked pricked rocked barracked frocked recked trucked croaked traiked brooked marked pricket grokked braked borked freaked barked peruked sharked forked wreaked trekked troaked troked carked warked bracket rocket reeked charked jerked shrieked rooked phreaked porked chirked irked beraked brocket raked perked crooked corked larked burked narked harked crocket creaked drouked parked lurked cricket darked worked quirked racket ryked shirked dirked yerked