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.
ar air are airy area aria aura awry areae array arrow aurae aurei arrowy
ar feuar knar mar lar liar bear boar gar far ear fear tar soar war roar char pear yar oar bar var hoar gnar maar guar lear jar gear car hear haar fiar dear sear tear rear wear par shear near year