STP File

What are STP files and how to open them

Are you having problems opening a STP file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a STP file?

STP files have multiple uses, and STEP Model Data (ISO-10303) is one of them. Read more about the other uses further down the page.

STEP Model Data (ISO-10303)

STEP Model Data is a 3D product model data exchange format. These files contain three-dimensional object data and are supported by a variety of different mechanical design programs.

How to open STP files

We have identified two STP openers that are compatible with this specific type of STP file.

Programs that open STEP Model Data (ISO-10303) files

Last updated: January 16, 2023

All known file formats using extension .STP

While STEP Model Data (ISO-10303) is a popular type of STP-file, we know of 6 different uses of the .STP file extension. Different software may use files with the same extension for different types of data.

Steem Patch

Steem is an open-source Atari ST emulator for Windows and Linux. It can run almost any Atari ST program. However, programs that do not run out-of-the-box can be updated with a patch. This is what these STP files contain - updates to Atari ST programs so they can be run in the Steem emulator.

STP opener for Windows

We have identified one STP opener that is compatible with this specific type of STP file.

More file formats using the STP extension

Through our research of STP files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • Dynamic Publisher Stamp
  • SignalTap II Captured Data
  • Spectrum Sound Tracker Pro 2 Chiptune
  • Verity Collection Stop List

Various apps that use files with this extension

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

Ultra LibrarianUltra LibrarianVerified
Quartus IIQuartus IIUser submitted
SystranTP ModuleSystranTP ModuleUser submitted
MillMillUser submitted
Microsoft Expedia Streets & TripsMicrosoft Expedia Streets & TripsUser submitted
SYSTRAN Translation Project ManagerSYSTRAN Translation Project ManagerUser submitted
RhinocerosRhinocerosUser submitted
IDA-STEPIDA-STEPUser submitted
Adobe AcrobatAdobe AcrobatUser submitted

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