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.
torn turn tern tarn tourney trona trine treen terne trone train triune turion triene tureen tranny terrine terrane terrain terrene dourine taurine trainee terreen tyranny darn durn triennia drain drawn drone drown
born horn corn lorn morn porn sorn torn worn shorn
tor tora torah tore tori torii toro torr tory