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.
museum miasm mazuma miasma misaim
museum sum resume seam seem seme semi sumo assume fusuma beseem hassium caesium coassume lyceum possum reassume cesium
muse mus mise mosey moues mouse mousey mousse mousy muss mussy amus amuse emus mums