Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Movavi Photo Manager - Focus on the memories, forget about managing photos
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Photos on macOS - Photos keeps your images organized and accessible. Rediscover favorite shots with Memories. Access them on your devices with iCloud Photos.
LightShot - The fastest way to take a customizable screenshot.
Smart Pix Manager - Smart Pix Manager is a powerful and reliable solution for the management and viewing of all documents, common images, sound (WMA, MP3), and video files (AVI, MPEG), etc.