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.
adore adder aider attire
adore dore moidore dor sudor doer storey door dire dory redrew hydrae odour boudoir dorr dare sautoire dere drew dure cadre odor tore padre dour retore fedora store dree stoure madre chador