AniView is a free and open source (animated) GIF image viewer with a few additional features. Giv by the same developer is available for operating systems older than Windows 7 including Windows Vista and XP. Video tutorial available.
IrfanView PlugIns 32 Bit package offers additional file formats and effects for IrfanView. This is the 32-bit version of the plug-in software. There is also a 64 Bit version available for those that run 64 Bit.
Photo Browser is an easy to use image viewing tool that allows for quick browsing and viewing of large image collections with many useful features that will help ensure your images are perfectly composed.