Visual Studio Code is a popular code editor that supports F# through the Ionide plugin. Given its popularity and cross-platform support, it is a good choice for lightweight F# development.

Setup

• Install Visual Studio Code .
• Open Visual Studio Code and go to Extensions (Ctrl+Shift+X).
• Search for Ionide-fsharp and install it.

Make sure to configure a shortcut to send selected code to F# interactive, to do this:

• Go to Preferences: Open Keyboard Shortcuts
• Find "FSI: Send Selection"