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.
agouty agouti acuity acute agate acuate act
gouty agouty checkout dugout dacoity scout pigout maggoty cutey cutty gout gutty acuity agouti backout bugout equity faggoty vacuity cookout lockout lookout knockout ragout sickout dakoity takeout shakeout