CCT File

What are CCT files and how to open them

Are you having problems opening a CCT 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 CCT files.

What is a CCT file?

CCT files have multiple uses, and Calamus Codepage Table is one of them. Read more about the other uses further down the page.

Calamus Codepage Table

These CCT files contain the documents created in Calamus, a software that generates high-quality output in any resolution used on Atari ST, a home computer released in 1985. Calamus offers a lot of features for desktop publishing; desktop publishing is the creation of content by making use of page layout software on your Atari ST.

How to open CCT files

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

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

Last updated: August 31, 2026

All known file formats using extension .CCT

While Calamus Codepage Table is a popular type of CCT-file, we know of 5 different uses of the .CCT file extension. Different software may use files with the same extension for different types of data.

CorelCAD Drawing Template

CorelCAD Drawing Template files act as reusable skeletons for creating new drawings in CorelCAD. They preserve document settings such as page size, units, layers, view configurations, styles, and metadata. The software loads these settings when starting a drawing from a template so standard setups need not be repeated from scratch.

These template files are produced by CorelCAD using its template - oriented saving feature. Users prepare a drawing with layouts, views, layer structures, and intended style definitions then use a "save as template" - type command, which stores all configuration without making a new drawing in itself. When a template is opened, it serves purely as a basis - drawings created later inherit its properties but are saved in the regular drawing format.

Template files share their internal structure with standard CorelCAD document files: they use the OLE2 compound file format (sometimes identified by the "OLE2 Compound Document v2" signature) and include sections or streams such as Contents, ViewInfo, LayerInfo, CustomViewDescriptions, and others. They can be distinguished by particular byte-patterns - for example an OLE signature at the very start, followed by specific strings like "Root Entry" or "Contents" deeper in the file.

Corncob 3D Theater-of-operation Data

We know that one CCT format is Corncob 3D Theater-of-operation Data. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Label Designer Plus Deluxe Template

Label Designer Plus Deluxe Template files are design template files used by Label Designer Plus DELUXE. They store template layouts for labels, business cards, tags, CD/DVDs, and similar printed materials. Templates define the size, layout, positioning of text, images, barcodes, background graphics, and other design elements so that users can quickly start new designs based on consistent styles.

The software that creates these template files is Label Designer Plus DELUXE, developed by CAM Development for Windows. Templates are loaded when starting a new project from a template or using a wizard; they are then edited, merged with data (e.g. from Excel, CSV, Access, databases), printed, or exported as graphics. The files are intended for reuse, sharing, or starting new layouts rather than publishing outside the program.

Internally these templates begin with a specific byte signature: the first four bytes are 0xBC 0x02 0x00 0x00 at offset 0. There is also a signature 0x34 0x7B (ASCII "4{") located at offset 6.

Macromedia Director Shockwave Cast

Macromedia Director Shockwave Cast files are data files created when a multimedia project built in Adobe Director is split into reusable components called cast members. These files are used when a project is published for Shockwave (DCR) so that shared graphic, sound, video, script, or other media assets can be stored separately. The cast file ensures that the parts of the project that are reused across scenes - or across different movies - are kept in one place to be referenced at runtime without being embedded in the main movie file. Published cast files described as "protected resources" cannot be edited within Director, which preserves the integrity of assets shipped for end‐use.

These cast files are produced by Director during the publishing process. When Director is set to publish a Shockwave movie, any external cast libraries are saved as cast files alongside the main Shockwave output. The publishing options include an option for external cast saving, and by default the cast file is placed in the same folder as the published Shockwave (DCR) file. The "cast" represents a library of media elements (images, sounds, etc.), and these CCT files enable these elements to be loaded by the runtime as needed.

The format is a "protected" or "published" cast resource, meaning Director uses a form that prevents modification of the content while still allowing it to be used by end‐users running the published movie. It differs from unprotected cast formats, which are editable in the authoring environment. Director's versions 5, 6, and later support external cast‐library files that can be referenced by multiple movies.

Internally, the file uses a binary container format compatible with Director's Shockwave publishing model. It begins with a signature such as the ASCII "XFIR" at offset 0, and includes further identifying bytes such as ".CDGFrevF" starting at offset 7. Those signatures help tools detect the file as the Shockwave cast resource type.

Various apps that use files with this extension

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

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