如果你不想为偶尔的图像处理工作在 Mac 上装肥大的 Photoshop，Acorn 是不错的替代品。Acorn 看起来摸起来用起来都很像神器 Photoshop，是的，它的设计目标就是成为 Photoshop 的轻量替代者，拥有所有 PhotoShop 的基础工具和滤镜效果，支持图层。

Acorn   MacOSX | 17 MB

Everyone needs to edit images at some point, but not everyone has the time to learn complicated super pricey image editing programs. This is why we created Acorn. Add text and shapes to your digital pictures. Combine images together to create your own. Work with layers to touch up your favorite photos or make something new from scratch. Do all this and more with Acorn.

New in Acorn 4:

Speed

Acorn 4 is a lot faster than its predecessors. From applying selections and filters to large images to using Instant Alpha, everything is faster.

Non-Destructive Filters

Layer styles and filters are now merged together into a happy new UI. Chain filters together to create endless combinations of unique effects knowing you can always change your mind later on.

Curves

Adjust the tonal response and even the individual color channels to perfect the midtones, shadows, highlights, and contrast in your images.

Multiple Layer Selection

You can now select multiple layers and move, delete, or reposition them all at once.

Boolean Shape Operations

Union, subtract, difference, and exclude. Perform Boolean operations with multiple shapes to make complex vectors in your images.

Merlin HUD

With the new filter HUD, you can now directly manipulate the radius and center points for your filters right on the canvas.

Improved UI

Acorn's tools have been expanded and the tools palette is now a separate window. The windows have even been given a new coat of paint.

New Shape Tools

Stars, Arrows, and a Bezier anchor selection tool await you in Acorn 4. Modify the points of a star to create triangles, diamonds, and other variations!