GPicView is described as 'Simple and fast image viewer with low memory usage. This little program is not aimed to be powerful or feature-rich. Its aimed to replace the default image viewer of current desktop systems' and is a Image Viewer in the photos & graphics category. There are more than 50 alternatives to GPicView for a variety of platforms, including Windows, Linux, Mac, Flathub and Xfce apps. The best GPicView alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or XnView MP. Other great apps like GPicView are nomacs, XnView Classic, qView and JPEGView.