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.
diamide timid dammed dammit dimity dimmed dummied demit domed tamed tumid dimout doomed dumbed teamed timeout
diamide amide amid amido imide samite chamade mid