Notes about the JTL file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The JTL file type is primarily associated with 'JTool' by Behavioral Health Quality. JTool is software to design and score quality tools and outcome measures. Microsoft Access can open the data file. The website and links to the software seem to have disappeared.
Detailed information for file extension JTL:
Primary association: JTool
Company: Behavioral Health Quality
File classification: Database
To change file associations press Windows Key
and then Apps and Features
> Default apps
> Choose default apps by file type
Invalid file associations could be the result of underlying issues within your Windows PC.