Gribnif is company that makes Atari software such as:
NeoDesk 4 -- The original replacement desktop
Geneva -- Reliable and easy-to-use multitasking
STalker 3 -- Terminal emulator
STeno 2 -- Text editor
Arabesque Professional -- Bitmap and vector drawing
Convector Professional -- Bitmap to vector autotracing
CardFile 4 -- Personal information manager
XBoot III -- Boot manager