PixelStyle Photo Editor for Mac is FREE but full-blown Photo Editor for Mac. Photo Editing Mac:

• A set of sophisticated but easy-to-use tools.
• Adjust exposure, hue, white balance, shadows and much more.
• Immediately delete unwanted elements and retouch the images.
• 1 min cut out objects from photos and change photo background.
• Quickly select any part of an image and apply special effects. Top Drawing Tools for Mac:
• More than 100 built-in drawing brushes.
• Create custom brushes with different brush sizes, shapes, hardness...
• Support pixel-drawing.
• Fill in the object with texture and color.
• support for many gradient modes including symmetrical, rotate, clockwise and counter. Powerful Layer Capabilities on Mac
• Full support for unlimited layers and layer groups.
• Easily add non-destructive layer effects.
• Support over 50 different filter effects and blending mode options.
• Resize layers without any loss of quality. Hide, duplicate and merge layers easily.
• Select several layers at one time and freely align, flip and transform the layers.
• Support channel selection and Alpha channel editing.
• Your file could be saved as a project.
• Work with all popular formats like TIFF, JPEG, PNG, GIF, BMP, etc. Excellent Text Design Tools on Mac OS X
• Add text layer effects like shadows, strokes, glow or fills.
• Half Circle Text Tool: Easily place and modify your text on a half-circle to create logos and other useful text designs.
• Modify your text with on-canvas controls. Use the baseline sliders to get things looking just right.
• Convert type layers into raster layers.
• Enjoy a full set of advanced typography features like kerning, bold, italic and much more. Designed exclusively for Mac
• Takes full advantage of the latest OS X technologies.
• Use the Touch trackpad to paint with pressure sensitivity.
• Fully optimized for 64-bit and multi-core processors.
• Support regular, retina and multi-monitor set ups.