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.
chorus choirs chores chirus choreas chars cheers chiros charrs chairs churrs chares shoers charas chirrs shores chirres cheeros chorizo charros churros cheerios cherries shris sheers shiers shires shirrs shares shears shrews sharias sherris shariahs sherries
sorus torus chorus ors coirs morse aureus giaours loris kurus boars gores crus rearouse virus boras soras aurous serious corse carious grues rues rouse pareus noirs arouse doers gorsy ceruse bores mores moors tors yores xerus shoers chores pours chirus wooers dorsa urus trues koras varus hoars oars tores torous ruse hydrous pores dorrs various serous torsi cirrus cereus gyrus cores horas curious ferrous hoers crouse cooers nairus praus gurus horse boors roues furious choirs parous porous goers lours hours vrouws noris fores horsy ferreous carouse grouse tours soars cors cruse truss moras ores cirrous roars ours sores cerous sours kors pooris dors whores worse fours peruse toras mors toros torrs zoris torse torso doors lores gorse shores druse yours
chore chorea ochreae ochre echoer churro churr choir chiru chirre chirr chiro cherry chary charry charro charr chare char shore ichor ochrea ochry