RGB Gradation...
RGB Intensify...
RGB Isolate...
RGB Offset...
RGB Remover...
RGB value for window background.
RGBA
RGBA sliders and edit boxes
RLE compression
RNG seed:
RPM Beautifier...
RPM Fog...
RPM Technicolor-2...
Radar...
RadiaLoom...
Radial Blender...
Radial Blur
Radial Burn
Radial En-/Decryption
Radial Mirror...
Image editors, Image viewers, Icons & cursors, 3D graphics editors, Other applications