Free Mac apps
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Photo Editing
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Fotor

Collection of image editing tools includes white balance, exposure, brightness, color contrast, saturation, and sharpness. Also, straighten, crop, rotate, and manipulate the image.

GIMP

Have you ever wished there were a free version of Photoshop? Well, there is — kind of. It’s called GIMP, and it does a good job of such tasks as photo retouching, image composition and image authoring. OK, it’s is not exactly Photoshop, but it you may find it comes close enough. And in case you were worried, GIMP no longer requires that X11 be installed on your Mac.

Image Tricks

Apply a number of cool effects to your pictures: adjust colours, add blurs, distort with twirl, bump and pinch, or stylize with mosaic, crystalize and halftone. Plus much more. You can also generate original images using similar effects.

ImageAlpha

Greatly reduce file sizes of 24-bit PNG files (including alpha transparency) by applying lossy compression and conversion to a more efficient PNG8+alpha format. Compatible with iOS, all browsers, and degrades well in IE6.

LiveQuartz

A free image editor based on layers and CoreImage filters. You have the layers on the left and the filters on the right of the window. To edit an image, just drag it into the layers’ list and it will be added as a new layer.

Photoscape

Photo viewing and editing software has many features, including rotate, straighten, resize, crop, color adjustment, auto level, white balance, curves, levels, paint brush, red eye correction, and clone stamp.

Pinta

Drawing and image editing program features drawing tools, adjustments and effects, full history, multiple layers and work spaces.

Pixlr

Image editor from Autodesk has dozens of filters, effects, overlays and borders. Tools allow for fast edits, refinements, styles and stickers. More features require a monthly subscription.

Seashore

Think of it as GIMP with a friendly interface. It won’t replace Photoshop, but it goes a long way. Development has restarted after a long hiatus.