The .fsd file extension is used by a variety of software programs for a broad range of file formats. Files with the .fsd file suffix are most commonly contain COCO AmsterCHEM flowsheet documents.
The .fsd file extension is also used for backup files created by the FacetWin backup software and Sheets document files.
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File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
If you have additional information about the FSD file format or software that uses files with the FSD suffix, please do get in touch - we would love hearing from you.