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.
moron morion morn morrion mourn maroon marron moreen moraine mirin marina marine murein murine murrain murrine
boron moron krooni cornu groin gyron horny horn iron prion heroin virion heron morn krone corn garron lorn croon whereon hyperon shorn chorion marron corny morrion neuron perron trone crone porno pyrone diuron drown torn hereon irony korun porny groan roan kroon giron born bourn borne crony irone barony baron carrion grown crown loran maroon krona trona durion drone sorn prone porn morion pereon turion mourn frown brown corona worn shoran neurone yourn
mor moira moirai moire moor moory mora morae moray more morro morrow