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.
stocker stockier stoker stacker sticker stooker stickier stagger staggery staggier sidecar
docker stocker deticker stoker tackier stickier sticker stacker attacker tucker toker ticker dacker tacker duckier ducker dickier dicker decker stockier stooker shtickier
stock stocky stack stick sticky stoic stoke stook stuck