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.
across acres acarus aggros agarose aggress agars aggers agoras agrees agrias augurs auguries
cross across gross recross kaross curios buckaroos guiros buckeroos karoos vaqueros crosse aggros vigorous agarose caress karroos necrose kouros regrows rockrose squarrose decorous tigress macros aggress picaros micros lacrosse buckayros cress egress crass vigoroso grass jackeroos cuirass grows crows jackaroos ogress raygrass regress rigorous saguaros sucrose digress checkrows