It's part of Ionide plugin suite. F# Interactive Panel in Atom.
Panel is readonly - You can send code to it using Send File / Selection / Line commands
Plugin requires specifying path to FSI.exe on Your computer
build.cmd Build(for Windows) or
build.sh Build(for Linux / Max) to build projects
releasefolder and run
apm linkto create symbolic link between plugin and Atom's plugins folder
The library is available under MIT license, which allows modification and redistribution for both commercial and non-commercial purposes.
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.