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.
rectal rectally rictal requital raggedly ruggedly
octal tectal rectal rictal ductal cattail actual pigtail mocktail lacteal cocktail victual bucktail requital octyl coattail factual coital ducktail cattalo dactyl tactual catalo wagtail
recta recti recto react recked recoat recode recut wrecked erect precode precut