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.
fain fan fin fino fawn fine vain faun fane foin fano fanny faena fauna finny feign fawny faunae fen fon fun van vina vino vine vein fohn vane viny fenny foehn funny veiny
ain fain vain cain gain kain lain main pain rain sain tain wain chain an in