XnView MP stands for Multi Platform = it is available for Windows, Linux and MacOS. It is a continuation of the older XnView Classic. In my opinion it is a great alternative to Windows photos app or any Linux image viewer that comes preinstalled. I even think it is an alternative to IrfanView. It is really fast and simple to use, supports more than 500 image formats, has built in folder browser, image converter, editor... AND MORE!
Face Warp - Face Warp is a fun photography app developed in the market by Wombatica Software.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Make Me Old App - Make Me Old App is a fun photo editor that allows you to make your face look decades older right through your cell phones.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Make me Old Camera - Make me Old Camera is a unique photo editor for phones and tablets that helps you do a realistic face change and answer the questions.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.