Are there any support tools like coderush or resharper for F#?
FSharpRefactor 0.1 (Preview version) Released on the Visual Studio Gallery.
http://visualstudiogallery.msdn.microsoft.com/339cbae9-911d-4f99-9033-3c3564676f45?SRC=Home
F# Refactor open source project on CodePlex (Apache license).