1)   Halftone 2.0
PhotoShop plug-in for dithering images with a halftone pattern. Halftone patterns are used to dither photographs and other shaded images in newspapers and are a popular effect in graphics design. Configurable, anti-aliassed results.
halftone, half, tone, pattern, dither, offset, dot, dots, rotate, rotation,

 2)   Xylograph LE 1.2
Photoshop plugin for curve line halftoning effects like woodcut, gravure or guilloche, and various "screen lines" effects. Full control over halftone line density, orientation, curvature and variations.
plugin, plug-in, filter, Photoshop, Fireworks, PaintShop Pro, Photopaint, Painter, Photo Impact, Adobe,

 3)   AmphiSoft plugins 1.2
10 Photoshop-compatible plugins for special effects and photo retouch. Effects include painterly look, line halftone, metallic, misc softening and sharpening.
plugin, plug-in, filter, Photoshop, Fireworks, PaintShop Pro, Photopaint, Painter, Photo Impact, Adobe,