dBASE IV Aldus setup control data
File type: Various data file
A ctl file extension is related to the dBASE, a database management system. A ctl file stores setup control.
Found 10 different file type records with the same ctl filename suffix.
File type category:
Various data file
Date updated: July 16, 2024
The ctl file extension is associated with the dBASE database management system (DBMS) and database programming language that works on various platforms.
The ctl file stores Aldus setup control data.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
File type category:
Internet related file
Date updated: December 30, 2024
The ctl file extension is related to Certificates used in Windows Operating system.
The ctl file contains saved list of trusted certificates.
These files can be possibility dangerous and be used as an exploit by remote attacker to trick victim into installing the attacker as a trusted publisher.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving ctl files:
Microsoft Windows
File type category:
Settings, options, themes or skins file
Date updated: November 1, 2017
The ctl file extension is associated with EAGLE (short for Easily Applicable Graphical Layout Editor), a CAE program for creating PCB schematics, developed and sold by CadSoft Computer, Inc.
A .ctl extension file might be created by users. After adjusting the cost factors and parameters for the Autorouter in the Autorouter Setup Window (AUTO command) it is possible to save these settings in a .ctl file.
A newly created .brd file (board) comes with EAGLE’s default settings for the autorouter.
It is not possible to open the ctl extension files.
Files with ctl extension are not convertable.
Software apps that create ctl files:
Microsoft Windows
Software apps that manage or store settings in ctl files:
Microsoft Windows
Software applications that handle other tasks involving ctl files:
Microsoft Windows
File type category:
Text file
Date updated: July 21, 2017
The ctl file extension is associated with the EditPlus text editor, HTML editor, PHP editor, Java editor and Hex Viewer for Microsoft Windows operating system. The .ctl file stores cliptext.
Use EditPlus to open .ctl cliptext files.
Software applications that can open ctl files:
Microsoft Windows
Software applications that can edit ctl files:
Microsoft Windows
Software capable of saving ctl files:
Microsoft Windows
Software apps that create ctl files:
Microsoft Windows
Software applications that handle other tasks involving ctl files:
Microsoft Windows
File type category:
Various data file
Date updated: September 27, 2026
IBM Lotus Notes 5 was a Windows groupware and office productivity application with email, calendaring, contacts, task tracking and instant messaging features. Its .ctl thesaurus file provided data used by the application's language and writing features.
The file stores data used internally by Lotus Notes and is normally used automatically by the program. It is not intended to store messages, calendar entries or other user-created Notes documents.
Lotus Notes 5 and this thesaurus format are legacy technology. The file may still be needed by an existing Lotus Notes installation, but it is not a commonly exchanged document format.
Open the file with IBM Lotus Notes 5 on Microsoft Windows. In normal use, Lotus Notes loads its thesaurus data automatically, so the file should be left in the location where the application installed or stored it.
The file is not intended to be opened or edited as a standalone document. A text editor will not display the thesaurus in a useful form.
There is no practical general-purpose conversion for an IBM Lotus Notes 5 thesaurus file. It contains internal language data rather than user content that can be exported as a document.
To retain the thesaurus, keep the original file with the Lotus Notes installation. If the goal is to move language data to another application, it must be recreated or imported through that application's own thesaurus or dictionary tools, when supported.
Software applications that handle other tasks involving ctl files:
Microsoft Windows
File type category:
Various data file
Date updated: January 29, 2018
The ctl file extension is associated with the LabVIEW, a graphical programming platform that helps engineers scale from design to test and from small to large systems.
The ctl file stores various data used for internal purposes of the LabVIEW.
File type category:
Program executable file
Date updated: September 27, 2026
The CTL file extension is associated with the PDP-10, a mainframe computer family manufactured by Digital Equipment Corporation (DEC) from the late 1960s. A .ctl file stores a batch script.
The file contains instructions for a batch job, allowing the system to run commands without interactive input. It is used with the PDP-10's operating environment and batch-processing tools.
This is a historical format tied to DEC PDP-10 systems.
On a PDP-10 system, submit the .ctl file to the operating system's batch facility. The file can also be viewed as text with a PDP-10 text editor.
After transferring it to a modern computer, a plain-text editor can usually display its contents, but it will not run the PDP-10 batch commands.
There is no standard conversion for a PDP-10 batch file. Its contents can be read as text and manually rewritten for another operating system's batch or scripting language.
File type category:
Various data file
Date updated: October 29, 2019
Record marked as obsolete and not updated for a long time.
The ctl file extension is associated with the Shape Pro, a GIS program for Microsoft Windows operating system, which allows users to create land-forming designs.
The ctl file stores control points data.
Software applications that handle other tasks involving ctl files:
Microsoft Windows
Shape Pro
File type category:
Game file
Date updated: September 27, 2026
StepMania uses the .ctl file to describe the contents of an SMZIP package. The file contains information about the game data in the package, while the package itself can contain game data for use by StepMania.
The .ctl file is supporting package data rather than a playable song, chart, or other game resource by itself. It is associated with StepMania for Microsoft Windows, Linux, and Mac OS X operating systems.
Open the SMZIP package with StepMania rather than opening the .ctl file separately. StepMania can use the description file as part of the package when it installs or processes the package.
If the file must be inspected independently, a text editor may display its contents, but changing it can prevent StepMania from correctly processing the associated package.
The .ctl file is package metadata and is not normally converted on its own. Keep it with the associated SMZIP package so that StepMania can use the package description.
There is no useful general-purpose conversion from a .ctl file to a playable StepMania file. To move the content, use StepMania's package handling and retain the complete package.
Software applications that handle other tasks involving ctl files:
Microsoft Windows
File type category:
Text file
Source code and script file
Date updated: December 31, 2024
The ctl file extension is associated with the Microsoft Visual Basic integrated development environment.
A control using ActiveX technologies. An ActiveX control can be automatically downloaded and executed by a Web browser. ActiveX is not a programming language, but rather a set of rules for how applications should share information. Programmers can develop ActiveX controls in a variety of languages, including C, C++, Visual Basic, and Java.
An ActiveX control is similar to a Java applet. Unlike Java applets, however, ActiveX controls have full access to the Windows operating system. This gives them much more power than Java applets, but with this power comes a certain risk that the applet may damage software or data on your machine. To control this risk, Microsoft developed a registration system so that browsers can identify and authenticate an ActiveX control before downloading it. Another difference between Java applets and ActiveX controls is that Java applets can be written to run on all platforms, whereas ActiveX controls are currently limited to Windows environments.
Related to ActiveX is a scripting language called VBScript that enables Web authors to embed interactive elements in HTML documents
Use text editor (Notepad) to view content of *.ctl files.
Software applications that can open ctl files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software applications that can edit ctl files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software capable of saving ctl files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software apps that create ctl files:
Microsoft Windows
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