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.
charade chard chared chaired charred shard chord chart shared chored shaird choroid churred charity chirred sheared chariot tiaraed cheered choired shrewdie chorioid choreoid shred sherd chert cherty shored shrewd shroud cheroot sheered shirred shortie
parade charade trade tirade sarode pardie pardee maraud karate grade corrade carate irade farad barde tiaraed rad
char chair chare charr charro charry chary