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.
gnaws gnus nows naos nays news knows newsy nausea newsie naysay gneiss nos nus nazi ness nisi noes nose nosy nous wyns
gnaws miaows shaws waws taws saws paws nows news nays naos knows maws vaws laws gawsy caws jaws hawse haws raws daws tawse chaws yaws