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.
nougat negate nugget nuggety knockout naugahyde nogged
nougat gat ducat squat fugato goat quate acuate agate gait begat gate equate coequate legate legato ligate liquate negate jugate loquat rugate diquat togate