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.
alan alane alien align aline aloin alone alienee
alan elan flan callan clan lallan plan solan xylan tolan uhlan ulan yulan