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.
rawin rewin rewan rewon rowan rowen
rawin win twine twain dawen swine swain seawan rewin lawine gwine lauwine jawan winy wino wine whin wain dwine twin twiny