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