WordPress: List Posts

file.php

<?php $args = array('post_type' => 'posttype', 'post__not_in' => array($post->ID), ); ?>
<?php $query = new wp_query( $args ); ?>

<?php if($query->have_posts()): ?>
  <?php while( $query->have_posts() ) : ?>
    <?php $query->the_post(); ?>
    // All Post relative stuff here
    <?php the_title(); ?>
    <?php echo esc_url( get_post_permalink() ); ?>

  <?php endwhile; ?>
  <?php wp_reset_postdata(); ?>
  <?php wp_reset_query(); ?>
<?php endif; ?>