Viewnior is an image viewer with a minimalistic interface that is fast, simple, and light. It supports GIF, fullscreen mode, setting an image as wallpaper, rotation, flipping, and cropping. It is designed with usability in mind.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.