How to open .DF1 file extension?

If you cannot open a new file that has been saved in the .DF1 format you need to download the appropriate software. The manufacturer of .DF1 files is Raining Data; .DF1 files belong to the Developer Files category. After downloading the application from the list available on our website just run an unknown file, and as the default set the newly installed application supporting the .DF1 files. Activities performed in the order described should solve the problems with all the files in the .DF1 format.

• What is .DF1 file?
• How to open .DF1 file?
• What is .DF1 file?