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.
palliator pellitory palter paltry plater platier plaiter platter pleater politer polluter pelter peltry plodder plotter poulter poultry plottier
palliator fellator valuator violator collator pellitory relator delator dilator dilatory chelator