A daily updated filename extension database!

QSTX file extension

The table below provides useful information about the .qstx file extension. It answers questions such as:

  • What is the .qstx file?
  • What program do I need to open a .qstx file?
  • How can the .qstx file be opened, edited or printed?
  • How can I convert .qstx files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ Quest III Quote File

QSTX file is a Quest III Quote File. The Timberlake Quest III Quoting and Estimation Tool (Quest III) program gives you tools for making and updating price quotes and sending them to your customers.
Category: Data files
Application: Quest III
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
QSTX aliases:
QSTX related links:
QSTX related extensions:
Maestro Labor Analysis File

Quest III A La Carte File

Other types of files may also use the .qstx file extension.

🚫 The .qstx file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

qst, qsx, qtsx, qtx, stx

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

SAS XPORT Transport File
SBIG CCD Camera Image
Roxio Express Labeler Document
EditPlus Syntax Data
QuickTime Extension
QuaSZ Texture
KaleidaGraph Style
Intuit Quicken v4 Data File
QuickSurf Data
QuickTapSurvey Data

🔴 Can't open a .qstx file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .qstx file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .qstx file extension, write to us!

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