For the sake of this exercise, I am assuming that you have a clear understanding of what XML-RPC is. If not, read more about it here. I am also assuming that XML-RPC is enabled on your wordpress blog and you have the required IXR_Library.php.inc downloaded from here.
The code below is self-explanatory.
debug = true; // Set it to fase in Production Environment
// Create the client object
$client = new IXR_Client('Your Blog URL/xmlrpc.php');
$username = "USERNAME";
$password = "PASSWORD";
$params = array(0,$username,$password,20); // Last Parameter tells how many posts to fetch
// Run a query To Read Posts From WordPress
if (!$client->query('metaWeblog.getRecentPosts', $params)) {
die('Something went wrong - '.$client->getErrorCode().' : '.$client->getErrorMessage());
}
$myresponse = $client->getResponse();
Once you have retrieved the post, you can loop them and display them in a table or process them the way you want it.