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.
intro inter interrow indri indoor
intro reentry haunter kantar quainter gaunter ranter pointer santur entry contra jointer centra renter santero hunter vaunter tenter country hinter shunter sentry inter daunter venter tantra chaunter painter mentor wanter linter wintry montero chantor cantor fainter enter gantry cointer andro santir center centre canter counter saunter reinter punter reenter gauntry quintar qintar antre bunter nitro tinter pantry chantry mounter chanter mantra winter minter chunter antra taunter banter dinitro gentry sinter yantra