PhotoHandler!

XnViewMP is a free software to view, organise, convert graphics and photos files or to create slide show, contact sheet, HTML pages.

JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images. On-the-fly image processing is provided - allowing to adjust typical parameters as sharpness, color balance, contrast and local under-/overexposure.

You can use the Photos app to view or edit photos and videos in your Pictures library and on OneDrive, and to import photos and videos. The Photos app includes a wide range of editing options to enhance your photos, from automatic fixes to advanced adjustments. After you've finished editing your photos and videos, you can then share them with friends and family without leaving the app.

With 7GIF you have full control over the animation: play, pause, repeat, frame-by-frame view, zoom, speed up/down; and a LOT of features like: frames export, fast GIFs switching, slideshow, full screen mode, Windows 7 (8 and 10) advanced taskbar features, multilanguage UI, online updates and much more!

InViewer, successor of GIF Viewer, contains the same features, many bugfixes, speed improvements and more, like support for audio and video files.