.ST File Extension

Atari ST Disk Image

Developer N/A
3.3  |  12 Votes
NEW: Open your .ST file online with File Helper.View Online

What is an ST file?

Disk image of an Atari ST program or video game; contains exact data copied from an Atari floppy disk or cartridge; may be opened on a PC using Atari emulation software.

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The Atari ST was a personal computer released by Atari in 1985.

Programs that open ST files


Smalltalk Source Code

Developer Alan Kay, Dan Ingalls, Adele Goldberg, et al.
3.5  |  2 Votes

An ST file contains source code written in the Smalltalk programming language. For example, it may contain a Smalltalk expression or script. Developers create ST files while writing Smalltalk programs.

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Screenshot of a .st file in Microsoft Visual Studio Code
ST file open in Microsoft Visual Studio Code

Smalltalk is an object-oriented programming language that has influenced many other object-oriented programming languages. It has many variants, including Smalltalk-80, GNU Smalltalk, OpenSmalltalk, Squeak, and Dolphin Smalltalk.

Developers creating Smalltalk programs save the source code they've written as ST files. At runtime, the Smalltalk compiler compiles the code ST files contain to bytecode, which is typically interpreted by a Smalltalk virtual machine.

How to open an ST file

You can open an ST file with Microsoft Visual Studio Code (multiplatform) or any other text editor. Doing so will allow you to view and/or edit the Smalltalk source code your ST file contains.

Programs that open or reference ST files

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