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.
roshi rishi rash resh rush roach rotch rushy reshoe reshow rotche rouche rushee rich
roshi mosh woosh heishi josh cosh gosh mashie bosh posh nosh rishi sushi dashi tosh tushie whoosh choush