PixBuilder Studio (Version: 2.1.1 as of this post) is a capable image editor. It has many features of those much more expensive than it.
PixBuilder Studio’s features include the typical brightness, contrast, hue, saturation, color balance, auto levels, (background and foreground) fill and more but also support for layers (including rasterize and combine), gradients, masks and even more that elevates it to Photoshop levels. Transform, flip, drop shadow and filters like Gaussian blur, sharpness, emboss and dithering are worth mentioning in terms of the Photoshop comparisons but it doesn’t end there.
Its tools are also numerous. They are pencil, line, brush (configurable type and sizes), eraser, healing brush, clone stamp, ellipse, rounded rectangle, eyedropper, 8BF plugin support and more. The select menu has many of the options one would expect. Lasso, magic wand and magnetic lasso make image and layer manipulation easy and convenient. Color selection and range make working with specific colors within images easier as well.
The browser panel (Tools—>Browser Panel) eases navigation, a full screen mode (View—>Full screen mode) cleans up the interface, Rulers (View—>Show Rulers) aid in image creation and sizing, multiple undo covers up mistakes, Palettes add many coloring modes and options.
Much like its expensive counterpart and lookalike there is also web preview for JPG, GIF and PNG formats. It can read JPEG, GIF, PNG, BMP, PCX, PSD, TGA, ICO and PBS formats and save to all except PSD. PixBuilder Studio is optionally installed in portable mode and requires Windows XP or newer.