CaptureScreen

Screen capture program, very easy to use. Right-click for contextual menu access. Move and size the window to the desired location, and select the "Capture" command for a region capture of the screen, or the "Full Screen" command for a full capture of the screen.

Save the capture with the "Save" command; png format (by default) gives a perfect result. For precision, the "Image Size" menu displays or sets the real size (pixels) of the capture.
The "Clear" command erases the capture and enables the commands to set the size of the capture.

The "Transparent Mode" command preserves the window and the image in transparency: you can use the capture like a tracing paper.
The "Thumbnail..." command allows to save a thumbnail of the capture (with a Preview command).
Image effects (Lighten, Darken, GrayScale, Invert, Contrast, Color, RGB ...) and some special effects are available with the "Effects" menu. The "Effects Settings..." menu allows you to set parameters for most of the images effects.