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.
painty panty paint pointy pant pint pinto panto punty pinot point pandy pinta peanut pineta pointe pantie pained pinata pinite pinnate punt pent punto poind panda pined paned panada panned pawned peined pinned punnet pennate
linty painty dainty pointy minty suint aunty giant kainit biont canty inti annuity paint vaunty into lenity rindy pinot runty jaunty binit bint panty pint pinto dint tenty tint windy chanty shanty banty nitty quinte quinta hint bounty feint pointe mint ninety lint haint point sanity saint quint lindy faint quaint vanity county joint janty pinta riant punty taint tenuity unity chantey shantey shindy
pain pan pin pinnae spinny pinna spine piney span pine epinaoi pina piny piano pein pian pean pawnee pawn panne pane pinny pion opine spin spinney spiny