The QPRJ file extension is related to the THINK Pascal and used for its project files.
QPRJ file extension - THINK Pascal project file
What is qprj file? How to open qprj files?
File type specification:
The QPRJ file extension is associated with the THINK Pascal a compiler for Pascal programming language available for classic Apple Macintosh computers. The *.qprj file stores project for THINK Pascal.