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.
cordite cordate corded credit gordita courted crudity corraded corotate corroded crated carded carted curded created crudded curtate gradate crowded gritted curated cardioid curetted graduate graded grated grided carotid crawdad garoted greeted gridded grouted guarded quartet quirted
cordite radiate airdate birdied eradiate erudite irradiate cordate credit gordita merited partite reradiate worrited chordate
cord cardia cardiae cardio cored corody corrida cowrite