Static link library
File type: Various data file
A sll file is a static link library containing compiled routines, external functions and variables for use by a software project.
Development tools for MS-DOS and Microsoft Windows 3.x use the library during the build process. A linker incorporates the required library code into the final application.
Found 2 different file type records with the same sll filename suffix.
File type category:
Various data file
Date updated: November 3, 2026
The sll file extension identifies a Static Link Library. The file contains reusable compiled code and data, including routines, external functions and variables. Unlike a dynamically linked library, its contents are resolved at build time rather than loaded separately while the program runs.
When a compiler, linker or binder builds an application, it resolves references to the library and copies the required code into the target program. The result is a self-contained executable, and both the process and the resulting program are associated with a static build.
This format was used with MS-DOS and Microsoft Windows 3.x development tools.
An sll file is a development library, not a document intended for direct viewing. Use the MS-DOS or Microsoft Windows 3.x compiler and linker that created the file, or another compatible development environment, to include it in a software build.
Without a compatible development tool and the project that uses the library, the file cannot normally be opened in a useful way. A text editor will not display its compiled contents as readable source code.
There is no general-purpose conversion from a static link library to a modern library format or to source code. The practical use is to link the file into an executable with compatible MS-DOS or Windows 3.x development tools.
If the original source code is available, it can be rebuilt as an appropriate library for a current development environment. The resulting library is a new build, not a direct conversion of the sll file.
Software applications that handle other tasks involving sll files:
Microsoft Windows
Microsoft MS-DOS
File type category:
Various data file
Date updated: September 28, 2026
Microsoft Office Web Components is Microsoft technology for embedding and publishing spreadsheet, chart, and database components through Web pages. The components use COM controls to provide this functionality on Microsoft Windows.
An SLL file is a supporting spreadsheet load library for Office Web Components. It is a software resource used by the components rather than a spreadsheet document intended for editing, and it belongs with the related Office Web Components installation.
Office Web Components is legacy Microsoft Windows software and is not part of current Microsoft Office installations. An SLL file may therefore be encountered with older applications or Web projects that depend on this technology.
An SLL file is not normally opened directly. On Microsoft Windows, it is used by a compatible installation of Microsoft Office Web Components and should remain in the location required by that software.
It does not function as a standalone spreadsheet. To view or edit the related data, use the original Office document or the older application or Web project that uses the component.
An SLL file is a software library, not a spreadsheet or other user document, so it has no useful direct conversion to a common document format.
If spreadsheet data is needed, open the original spreadsheet or the application that uses Office Web Components and export the data from there.
Software applications that handle other tasks involving sll files:
Microsoft Windows
Microsoft Office Web Components
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