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.
triad trad tried trade tread toroid triode torrid tirade trod turd tarried droid treat tardy druid torta trait dread dried trite tired tardo tyred tared trued treed trode teredo toured dorado deride tarred tiered territ teared hydrid treaty hydride hydroid tart tort tret trot
myriad triad rad rid murid road hydride pried tread fraud corrade orad parade hybrid maraud braid bread bride grad viroid toroid serried bourride dried varied tarried liard cried period choroid worried brad wherried tried trad druid dorado sciurid horrid queried giardia juried jerrid buried caried farad hayride grid quarried nereid jerid boride gride berried virid arid carried raid parried lurid neuroid herried fried joyride cardia aroid pride ferried harried wried irid aeried ride read grade querida hurried curried married lariat sciuroid oread broad droid dread byroad reread corrida tirade deride torrid trade irade wearied hydrid whirried charade hydroid tiaraed
terai tora torah tori torii tray trio atria straw strawy stray stria striae