What is .FSI file extension?
.FSI file extension is a known file type. This section tells you everything you need to know about this extension.
Signature file used by Visual F#, a component of Microsoft's Visual Studio software development kit; contains information about the F# program element's public signatures, including types, namespaces, and components.
FSI files can be used to specify accessibility rules to program code within an .FS file. This technique is used to restrict access to other program code that executes outside of the controlled FS file.
FSI files always have the same filename prefix as their associated FS file.
You can see a list of software programs below that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.