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.
grouse crouse carouse cruse grows gurus gorse gross grues crosse course guiros grease cruise carious curious crus gars corse cross carse gorsy goers graze grace guars gaurs curse grees gores grays kurus croze crows grass greys kouros coarse curios greasy grassy creese crease kersey karoos kaross curiosa gurries karroos
arouse rearouse rouse grouse carouse crouse course vrouws cirrose druse torse ariose morose brose corse nurse cerous serious sours torose furious tours sorus chorus triose torus torous hydrous drowse serosae parous cirrous ceruse rerose purse pours porose serous porous erose cruise horse fours ruse ferrous curse gorse morse cruse lours ours roose hours reuse arose crosse bourse peruse aurous prose browse ferreous carious roues gyrose burse giaours various rose bruise curious worse yours