ANI - Windows Animated Cursor is one of the best file extensions around when it comes to cursor animation files. This is one of the most common files that are used by Windows operating systems today. They also are contained by image frames for the animation sequences. They are most commonly used under .CUR and .ICO files. .ANI files are mainly used for storing different cursors, etc. You can also use different third party developers to help out with your download as well. There are also different types of desktop themes which are custom that you can also take advantage of. They really come in handy when you need them the most. There are also different security updates in which you can take advantage of as well that have just recently been added for your convenience.