Go to the page of Apowersoft Free Screen Capture and click on “Take Screenshot” button to run this application. In order to let you know how to use this tool, we write this guide to show the steps of using it in details. It allows you to capture screenshots, add some annotations, save them to local drive/Cloud space or share the snapshots to social media sites instantly. Apowersoft Free Screen Capture is a free online tool for you to take screenshots on both Windows and Mac.