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.
shale shaley shaly shall shoal sheal shaul shawl shoaly chaleh challie sial shallow shul chile shill shell shyly shool sheol shily shiel chyle chalah challa chally chelae sheila shelly challah
hale whale shale ale pale alae heal gale goalie rale aloe phial wale alee hyphal haul wheal whole chile quale bale shall shaul sheal tale dale haole hole male while vale palea mealie maile kale chyle sale galea chaleh halo hall hail value phyle shaley shaly shawl shoal
sha shah shaugh shaw shay shea pshaw