StarOffice master document
File type: Document file
An sgl file is a legacy StarOffice master document. It defines a document assembled from several separate files.
The format belongs to the word-processing component of StarOffice and related OpenOffice.org-based office suites.
Found 2 different file type records with the same sgl filename suffix.
File type category:
Document file
Date updated: October 12, 2026
Record marked as obsolete and not updated for a long time.
StarOffice, developed by Sun Microsystems, used SGL files for master documents. A master document brings together separate text documents and presents them as one larger document, such as a book or report.
An SGL file contains the master document's structure and references to the files that make up its content. The referenced documents remain separate files, so they must remain available for the master document to display and update them correctly.
OpenOffice.org later used the sxg for master documents. SGL is now an obsolete format, although Apache OpenOffice and LibreOffice Writer may provide compatibility with legacy StarOffice documents on their supported platforms.
Open the sgl file with StarOffice on Microsoft Windows, or with Apache OpenOffice Writer or LibreOffice Writer on a supported platform. These programs may ask for the files referenced by the master document if they are not in their original locations.
Because SGL is obsolete, a current version of Apache OpenOffice or LibreOffice may not reproduce every legacy feature. If the file does not open correctly, an older StarOffice or OpenOffice.org installation may provide better compatibility.
Open the SGL file in a compatible Writer program and save it in a current master-document format, such as OpenDocument Master Document, or export the assembled document to PDF.
Keep the referenced source documents available during conversion. Exporting to PDF produces a fixed copy of the assembled document, while saving to a current master-document format preserves its links to separate files.
You can also convert SGL format to PDF using the PrimoOnline service.
Software applications that can open sgl files:
Microsoft Windows
Software applications that can edit sgl files:
Microsoft Windows
Software capable of saving sgl files:
Microsoft Windows
Software apps that create sgl files:
Microsoft Windows
Multiplatform
Software applications that handle other tasks involving sgl files:
Multiplatform
File type category:
Game file
Date updated: October 5, 2026
Record marked as obsolete and not updated for a long time.
The Games: Summer Challenge is a summer sports simulation computer game developed by Accolade for MS-DOS. Its tournament files use the .sgl extension.
An SGL file stores progress from a tournament in the game. The format is obsolete.
Open an SGL file with The Games: Summer Challenge on an MS-DOS system. On a modern computer, the original game may require an MS-DOS emulator such as DOSBox; place the file where the game can access it and load it from the game's tournament controls.
SGL files contain game-specific tournament progress and have no useful general-purpose conversion format. To preserve or continue the progress, use the file with The Games: Summer Challenge.
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