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.
kantar canter qintar cantor gantry quintar gauntry gaunter quandary keynoter quainter qindar gander contra candor kinder candour cointer contour counter country
kantar quintar qintar hinter punter pantry gaunter antra fainter bunter sinter mantra minter notary cantor jointer antre mounter enter chantor vaunter centre shunter chaunter reenter reinter centare center santir wintry entry saunter tantara taunter tinter wanter banter hunter contra sanitary pointer renter reentry centra centaur chantry daunter monetary sentry tenter tantra winter unitary intro ranter gauntry painter santur gentry canter cointer counter gantry haunter venter chunter quainter inter country linter mentor qindar chanter yantra
cant canto canty kainit kainite kent kente