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.
doers dors dorrs deers dorsa doors dears deairs derays dories douras derris tors derries dowries dearies dourahs drys terse toros dress tores torso torse tours dares draws torrs duras tears torsi drays toras drees dross tiers duros torus dries durrs dures drossy drowsy hydras torahs duress hydros torous drowse tories durras dressy terais terras dairies daresay diaries durries hydrous terries tars tres
hoers goers cooers wooers shoers doers ors ers whores heros eras bores errs hours lehrs boras lours gorsy horsy heres cores feres shiers fears verse piers loris roues fours shears hypers leers boars horas weirs sears veers noris seres gorse ears moras shores yores deers doors dors tears tiers tores suers torrs torso tours worse cheers chores torse pooris ceres keirs soras sieurs kors pears zeroes hoars zoris morse perse queuers peris roars koras verso ores mores peers heroes soars cors heirs horse sours sorus xerus roes nears queers bears peres haeres corse ruers mors lears beers kiers hears lores hers gears viers liers meres gores ours biers moors quaeres giaours pours fores coirs sers boors noirs eros jeers terse rears seers ceros oars dears gheraoes dorrs sores froes wears years toras toros tors torsi torus dorsa zeros wheres pores cheeros choirs chorus sheers yours
doer dor odor dowry dear dearie deary deer deray dere derry door dore dorr dory dour doura dourah adore doter