SkyGrad is for tinting the sky area of your photographs.
Pseudo-IR produces a similar look as to when you use traditional black and white infra-red film. It first removes all color from the picture and gives a very slight blur, to indicate the camera is trying hard to focus in a low-light situation. NightScope adds a basic night-vision effect to your images. It will produce clear black and white images with limited tones, which are suitable for cheap reproduction via the office photocopier, or when published in newsprint. Techni-X will bleach out most of the mid-tone grays, leaving crisp, dark blacks and bright, clean whites. G-Force gives you some traditional monochromatic grain effects, similar to using 'fast' B&W camera film.
Hi-Spot creates high contrast black and white photos. Fotomatic is a collection of eight plugin filters for use with Photoshop or compatible host applications (32-bit hosts only).