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.
skegs skags squegs scags seaquakes seccos sacques squawks squeaks seacocks
skegs kegs squegs skags seaquakes pikakes hoecakes quickies kikes quakes gawkies cukes cookies cookeys cokes cakes teacakes