ASSY file format description

Many people often share .assy files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .assy files. To address this issue, we have created this page to offer assistance and guidance on handling .assy files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .assy files.

Our aim is to simplify the process and promote seamless use of the .assy file format.

1 filename extension(s) found in our database.

.assy - Siemens NX Assembly Data

The ASSY data files are related to Siemens NX. The ASSY file is a Siemens NX Assembly Data. Siemens NX (NX Unigraphics) is a CAD/CAM/CAE software package originally developed by Siemens PLM Software.

Siemens NX
Data files
- / -
Siemens NX Assembly Data related extensions:
Media Catalog MML File
PLUS-Slitting Binary Job
Mozilla Firefox Partial Download
Adobe Photoshop Lightroom Index Data
Nitro Screen Resource
Manga Studio Scene Data

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

Can't open a .assy 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 .assy file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

ass, asy, ssy

Is it possible that the filename extension is misspelled?

There is a possibility that the .assy filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .assy:

Asymptote Document
Xilinx CORE Generator Graphical Symbol File
LTspice Symbols Data
Advanced SubStation Alpha Subtitle
ScreenShare Compressed Data
FullProf Average Size Strain Plot Data

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .assy file format, then write to us! >> ASSY file