Could anyone point to me to real-world examples of large-scale projects (10+ developers, multi-year, 1M+ lines of code etc.) that have been developed in a functional programming language? A frequent argument that I hear is that while imperative languages are more verbose, less elegant etc., they have some intrinsic merit for the development of large projects. The argument goes that this verbosity in some way makes for code that is more maintainable / shareable amongst large groups of developers. I'd be interested in practical examples that point to the success of functional languages for similar large projects. I'm aware of some of the Erlang success stories; can anyone else share relevant ones for languages like ML, Lisp, Haskell etc?