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What are CAPX files and how to open them

Are you having problems opening a CAPX file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your CAPX files.

What is a CAPX file?

CAPX files have multiple uses, and Capella CapXML Music Notation is one of them. Read more about the other uses further down the page.

Capella CapXML Music Notation

These CAPX files contain score sheets created in Capella's notation software, software for creating musical score sheets. Currently, Capella is only available on Windows. In these CAPX files, the nodes in use are single chords with one or more notes.

How to open CAPX files

Important: Different programs may use files with the CAPX file extension for different purposes, so unless you are sure which format your CAPX file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested six different CAPX openers which you will find listed below.

Last updated: May 31, 2022

All known file formats using extension .CAPX

While Capella CapXML Music Notation is a popular type of CAPX-file, we know of 2 different uses of the .CAPX file extension. Different software may use files with the same extension for different types of data.

Construct Compressed Game Project

We know that one CAPX format is Construct Compressed Game Project. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

These apps are known to open certain types of CAPX files. Remember, different programs may use CAPX files for different purposes, so you may need to try out a few of them to be able to open your specific file.

ConstructConstructUser submitted
capellacapellaUser submitted
Capella ReaderCapella ReaderUser submitted
ForteForteUser submitted
capella startcapella startUser submitted

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about CAPX file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.