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.
gambits gamuts gametes gumboots gummites gambades gambados gambadoes gomutis commits combats comities gummatous coembodies committees comets comtes comates
gambits ambits demits summits smites remits omits mammitis mites mitis mitts boehmites emits fomites vomitos vomits vomitus combats commits gummites limites limits numbats reemits samites somites symbiots wombats