PostPlanner lets you post to one or more Facebook pages and/or groups at the click of a button.  It's  very simple to use and easy to pick up. It offers many different features.  One of the most powerful features is the ability to create lists.  We should also note it has an analytics feature too.  This can help you figure out not just which type of post performs the best, but when. PostPlanner is great Facebook tool with 4 different plan options.  The Pro Plan is FREE.  www.PostPlanner.com