F# looks lovely, but I have yet to find good cross-platform 2D plotting and 3D visualization story.
(ActiViz would give me everything I need, but the current wrappers are several releases out of date - though there is an ongoing Kickstarter to hopefully fix that)
These may be some top-notch groups... but, it's a red flag (to me) that they didn't include anyone without a vested interest in the language as part of this list. This just says that the company that developed the language also uses it.
F# has been used within Microsoft to implement TrueSkill (the ranking system for Xbox Live) as well as the advertising platform for Bing.
Me, I use it mostly as a better scripting language.
- There were very few numerical libraries, and those that existed either had a high overhead (compared to, say, calling NAG from C++), or weren't very robust (didn't degrade well in edge cases).
- A windows license for a server machine with > 32 GB of RAM cost an arm and a leg, so server farms got very expensive very quickly. (Oddly, the price of the license depended on the RAM of the machine involved.)
It looks like NAG now has a .NET version, so hopefully things have improved. For a while, it seemed like math in .NET was strictly amateur hour, but I'm sure it's better now. I don't have the strength of will to research if the licensing cost has improved at all.
FWIW, you now have these options in Windows Azure:
- Memory Intensive VM (4 x 1.6GHz CPU, 28GB RAM, 1,000GB Storage) : $0.90/hr
- Memory Intensive VM (8 x 1.6GHz CPU, 56GB RAM, 2,040GB Storage : $1.80/hr
When you do big enterprise projects, and finance is such a case, there many higher costs associated with the project than what is paid in licenses.
Edf energy trading
... Just off the top of my head :-)
You also have some use cases here,
(disclosure: I'm doing some contract work with the F# team)