CTL file: How can I open a .CTL file?
The table below provides useful information about the .ctl file extension. It answers questions such as:
- What is the .ctl file?
- What program do I need to open a .ctl file?
- How can the .ctl file be opened, edited or printed?
- How can I convert .ctl files to another format?
We hope you find this page helpful and a valuable resource.
✅ Visual Basic User Control Text

The CTL file is a Visual Basic User Control Text. The Visual Basic source code and property values for a control class are stored in a text file with a CTL extension. A CTL file is equivalent to the Visual Basic FRM file that is used to store this information for a form.
✅ AGPS-Shape Pro Control Points Data

The CTL file is an AGPS-Shape Pro Control Points Data. AGPS-Shape Pro is a Windows-based agricultural surface-drainage, land-forming design and control program.
✅ EditPlus Cliptext Data

The CTL file is an EditPlus Cliptext Data. EditPlus is a text editor for Windows with built-in FTP, FTPS and sftp capabilities.
✅ PDP-10 Batch File

The CTL file is a PDP-10 Batch File. The PDP-10 is a mainframe computer family manufactured by Digital Equipment Corporation (DEC) from 1966 into the 1980s.
✅ LabVIEW Control Data

The CTL file is a LabVIEW Control Data. LabVIEW (Laboratory Virtual Instrumentation Engineering Workbench) is a platform and development environment for a visual programming language from National Instruments.
✅ EAGLE Autorouter Control Data

The CTL file is an EAGLE Autorouter Control Data. EAGLE is a flexible, expandable and scriptable EDA application with schematic capture editor, PCB layout editor, auto-router and CAM and BOM tools.
✅ Stepmania Package Description

The CTL file is a Stepmania Package Description. StepMania is an open source and cross-platform rhythm video game and engine. The StepMania package format was created to make the distribution of songs and other add-ons very easy.
✅ dBase IV Aldus Setup Control Data

The CTL file is a dBase IV Aldus Setup Control Data. dBase is a widely used database management system (DBMS) for computers.
✅ RSView Machine Edition Control Data

The CTL file is an RSView Machine Edition Control Data. RSView Machine Edition is software for developing and running human-machine interface (HMI) projects.
✅ Lotus Notes 5 Thesaurus Data

The CTL file is a Lotus Notes 5 Thesaurus Data. Lotus Notes is the "classic" client for accessing the Domino/Notes server and processing e-mail, appointments, contacts and much more.
✅ Certificate Trust List

The CTL file is a Certificate Trust List. A CryptoAPI CTL is a list of items that has been signed by a trusted entity.
⚠ Be careful with .ctl files.
It's important to know that the .ctl file extension can be used by various programs, not just the ones you expect. This includes potentially harmful software or malware that might create .ctl files. Be cautious when dealing with .ctl files from unknown sources.
🚫 The .ctl file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .ctl 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:
Select an app to open this .ctl file
It means that the operating system does not have a default app associated with the .ctl file type. To resolve this issue and open the file, you can take the following steps:
- Right-click on the .ctl file. A context menu will appear.
- From the context menu, select Open with. Windows will display a list of recommended apps.
- If the desired app is listed, select it from the provided options.
- If you cannot find the appropriate app, you may need to install software that supports the specific file type.
If you don't know how to change the default app for the .ctl file, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. The extension of a file serves as a hint to the operating system and various software programs about the type of data contained within the file. When you alter a file's extension, you essentially modify how software applications interpret and handle that file. Every file has a specific format, also known as its file type or file format. The problem is, changing the file extension does not change the file format.
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