>> STMX file

STMX file format description

Many people share .stmx files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .stmx file can be edited, converted or printed with. On this page, we try to provide assistance for handling .stmx files.

1 filename extension(s) found in our database.

.stmx - STELLA Model Data

The STMX data files are related to Stella. The STMX file is a STELLA Model Data. STELLA Runtime is a simulation modeling environment that allows one to graphically capture the cause–effect relationships of a system that affect state variables.

Data files
- / -
STELLA Model Data related extensions:
STELLA Runtime

Naturally, other applications may also use the .stmx file extension. Even harmful programs can create .stmx files. Be especially cautious with .stmx files coming from an unknown source!

Can't open a .stmx 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 can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .stmx file extension is often given incorrectly!

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

smx, stkx, stm, stma, stx, tmx

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

SysMetrix Skin
SAS XPORT Transport File
Translation Memory Exchange Document
SBIG CCD Camera Image
Tiled Tile Map XML

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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