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.
reman remain roman romano romaine ramen rumen ramona rumina
foeman leman reman man hemin humane caiman cowman layman maun many remain mane foemen lemon lawman roman seaman simian daemon demean domain woman showman liman immane mano main mawn cayman moan amain bayman bemean bowman mana bemoan human mean haemin meany romano semen soman daman demon toman shaman yeoman
rem ream bream cream creamy creme gremmie gremmy premie rearm dream dreamy uremia