File Type 1 Generic IconGeneric Graph File
File Format Standard
Usage Open manually
Popularity ★ ☆ ☆ ☆ ☆  Rare

Graph created by a number of different possible programs, including Micrografx Graph Plus, GraphEdit, and Accelrys Insight II.

Open With

IconGraph Edit

IconOther graphing program

Updated 2007
File Type 2 Generic IconRagnarok Client Archive
File Format Proprietary (Gravity)
Usage Open manually; may be referenced by an application
Popularity ★ ★ ★ ☆ ☆  Average

Compressed file archive used by Ragnarok Online, a Korean multiplayer game; includes compressed images, sounds, and other data files loaded by Ragnarok; installed with the other game files and are named "data.grf" and "sdata.grf."

The contents of a Ragnarok GRF file can be browsed and extracted using GRF Factory, a free utility available at neatocool.com.

Open With

IconGRAVITY Ragnarok Online

IconGRF Factory

Updated September 25, 2007
File Type 3 Generic IconDPlot Graph File
File Format Proprietary (Hydesoft Computing)
Usage Open manually
Popularity ★ ★ ★ ★ ☆  Common

2D or 3D graph created from scientific plotting data; designed primarily for scientists, engineers, and other technical fields; can display probability charts, distribution plots, tripartite grids, polar charts, triangle plots, hydraulic scales, and other types of graphs.

More information about the DPlot program, including the free DPlot Viewer, is available at the DPlot website.

Open With

IconHydesoft Computing DPlot

IconHydesoft Computing DPlot Viewer

Updated March 20, 2007
Information from the PC File Extensions Reference