digiKam - Professional Photo Management with the Power of Open Source
Portrait Professional - PortraitPro is the world’s best-selling retouching software. Fast and intuitive, PortraitPro edits your portrait photos for beautiful results
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
PT Portrait - Easy portrait editing software. Remove blemishes. Thin wrinkles & perfect skin.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Pixarra Selfie Studio - Photo Editing for Selfies