Windows

.XLTX

.XLTX file extension

This is the list of programs to work with .XLTX extension

Microsoft Office Visio

Microsoft Office Visio Microsoft Office Excel Template

Create flowcharts, network diagrams, floor plans, and other designs.
Microsoft Office 2003 Web Services Toolkit

Microsoft Office 2003 Web Services Toolkit Microsoft Office Excel Template

Security Update for Microsoft Office Word 2007 (KB950113)

Security Update for Microsoft Office Word 2007 (KB950113) Microsoft Office Excel Template

This update is to prevent other to run and modified in a malicious way a file.
Microsoft Global IME for Office XP (Japanese)

Microsoft Global IME for Office XP (Japanese) Microsoft Office Excel Template

Crystal Ball

Crystal Ball Microsoft Excel Template

Ask the Crystal Ball a question, and it will give you some funny answers.