Files with qnx extension are used by Quicken program. They include some sort of financial data.
Software that open qnx file
QNX file extension - Quicken index file
What is qnx file? How to open qnx files?
The qnx file extension is associated with Quicken, a personal finance management tool developed by Intuit, Inc, which is available in both Windows and Mac Versions.
The .QNX files were the main files used by Quicken Win version 1 to 4 and Quicken DOS version 3 to 8, probably to store some sort of financial data.
The default software associated to open qnx file:
Company or developer:
Intuit Inc.
Quicken is personal finance management program for Windows that comes in several editions: Quicken Deluxe, Quicken Premier, Quicken Starter.
List of recommended software applications associated to the .qnx 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 qnx file, edit qnx file, convert qnx file, view qnx file, play qnx file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with qnx file - Quicken index file
Click on the software link for more information about Quicken. Quicken uses qnx 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.).