ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.
digiKam - Professional Photo Management with the Power of Open Source
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
Flickr - image and video hosting website
Fotor - Fotor is an all in one visual platform. It includes photo editor, collage maker, and graphic designer. You are free to make a visual look more beautiful.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.