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.
felly fell filly feyly folly fully fella fly fellow foully fellah felloe feal flay fuel fall feel fley fill full flawy vealy foley fillo fille faille valley flooey fallow follow volley fil flu flee vill flue veil fila veal flow file foul foal flaw foil fool fail floe flew filo flea vela fowl
belly felly telly delly shelly kelly welly jelly nelly ell feyly pulley hello belay newly quell rely well gilly jolly billy hilly niello nielli vealy dally paella cully knolly folly cell knell duello hell dilly chilly woolly wholly sell celli tally dually lolly cella sally leally holly mulley rally fully dell silly mell valley jell gully golly colly pally cello eely dully coolly gulley bally relay foully bell tell filly jello fella mealy illy cullay seely sully gally bully allay volley fell alloy molly really selle galley belle shell delay alley lily dolly duelli wally ally willy chally yell