There are 11 other file types using
the GDF file extension!
.gdf - Bitmap IBM graphics data format
.gdf - GEOS dictionary
.gdf - FutuRUG group definition
.gdf - Geographic Data File format
.gdf - 3DMove 3D geological model
.gdf - GlossTeX definition
.gdf - GRAFIK Eye Designer project
.gdf - SmartWare graph definition
.gdf - GUESS data format
.gdf - GraphWorx32 display
.gdf - GURPS data
GDF file extension - Quartus II file
What is gdf file? How to open gdf files?
File type specification:
The gdf file extension is associated with the Quartus II a FPGA design software includes everything you need to design for the following Altera FPGA and CPLD families. The .gdf file stores various data used for internal purposes of the Quartus II.
The default software associated to open gdf file:
Quartus II Web Edition Software 
Company or developer:
Altera Corporation
Quartus II Web Edition FPGA design software is used to design Altera FPGA and CPLD families.
List of recommended software applications associated to the .gdf file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open gdf file, edit gdf file, convert gdf file, view gdf file, play gdf file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with gdf file - Quartus II file
Click on the software link for more information about Quartus II Web Edition Software. Quartus II Web Edition Software uses gdf file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
