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.
cymbaler cymbaleer smaller smiler smeller seemlier smellier sommelier
cymbaler humbler tumbler mauler mealier ambler bumbler fumbler mailer gambler jumbler mumbler nimbler rambler rumbler cymbaleer smaller wamblier