GIMP - GIMP is a multiplatform photo manipulation tool.

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.

MyPaint - MyPaint is a fast, distraction-free, and easy painting tool for digital artists.

Photoscape - high quality photo editing software, that enables you to fix and enhance photos.

Microsoft Paint - Paint (formerly Paintbrush) is a simple, ultra-basic graphics painting program that is included...

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.