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.
shoal shoaly shawl sheal sheol shool shaul shaly shall shale shaley sial shallow shul shily cholo shyly chola shell shill shiel challa cholla sheila shelly chaleh chalah chally challah challie
shoal foal shawl shaly shale chola wheal goal coala zoeal coal joual howl holy hole shoaly sheol heal halo whale haul sheal shaul shall cholo whole koala ghoul coaly hyphal phial hail hale hall shool
sha shah shaugh shaw shay shea shoe shoo show showy pshaw