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.
graver craver gravure griever groover groovier carver curvier gruffer gruffier carfare carefree
raver bereaver braver reaver preaver craver graver brevier curvier driver prover carver rover griever moreover trouvere forever arriver wherever bravery trover reiver trouveur riever privier drover server river groovier groover revere deriver nervier revery shriver
grave gravy crave garvey graph greave grove agrafe agraffe agrapha agraphia