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.
stoker stocker stooker stockier stacker sticker stickier stagger staggery staggier sidecar
toker stooker stoker duiker deticker diker duckier docker retaker tucker ticker taker tackier tacker ducker stockier sticker stocker dickier dicker decker daiker attacker stacker stickier dacker shtickier
stoke stake stock stocky stoic stook