https://ionide.io/
Ionide
https://www.infoq.com/news/2015/09/ionide-fsharp-ide/
Ionide is a New Atom-based F# IDE Written in F# - InfoQ
Ionide, based on the Atom Editor, is a suite of packages that aim to provide a full-featured, modern, cross-platform, open-source IDE for F# development. InfoQ...
is anewatom