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.
woolies woollies wools wholes walies willies wallies wellies wiles wales wheelies whales whiles wayless wauls wheelless wills walls wells wawls wails weals wallas wheals wheels wallahs wallows waylays willows
colies woolies doolies polies molies holies coolies oles lies bullies billies boles goalies hollies poleis polis boules oleos mooleys lieus fillies fellies holes dallies gillies dillies coulis joles follies jollies allies folios doles chilies woollies willies wheelies wallies toles tellies doylies doolees sallies collies bailies louies bellies follis sullies relies nellies milieus joules soles jellies lilies aiolis roles rallies ghillies kellies voles dailies ghoulies poles flies coles folles gullies hoyles bialies police olios coleus moles belies mealies mollies looies ballies doilies polios foleys voiles muhlies gallies sillies lollies soleus dellies cullies haoles dollies plies tallies toiles walies wellies wholes killies challies chillies les lis