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.
count county cunt conte conto cant cuneate coontie connote connate condo gaunt canto coned quint quant canty conned quinta cannot coined conoid gunite quaint quanta quinte coigned conidia quinate quinnat kent
fount mount count dunt unit sound daunt runt snout punty round point punt gaunt county lunet chaunt nonet hound mound lunt quint conte hunt vaunt conto junto joint jaunt wont haunt quant bound bunt knout biont vaunty bounty aunty font cunt found jaunty aunt onto junta monte pound punto rainout runout runty snouty suint donut taunt unto wound shunt
con coin cone coney coni conn cony coon icon coquina scone