C# is the most productive production language - it exposes a lot of functional conveniences along with the robustness of strong typing. And they're finally embracing the open source community - a huge plus.

#Language Features We use the basic syntax (for, foreach, if,while) and object oriented constructs (classes, very simple inheritance).

We also use lambdas and block methods extensively, an intermediate level programming construct, but in a very formulaic and predictable way.

Cloure is a high level language that provides access to both the JVM (for server-side development) and javascript (for client-side development) with largely the same language. This is important to limit context switching and enable code-reuse during fast product cycles. Clojure is ideal for rapid prototyping and has a strong focus on stability, correctness, and concurrency. Tools like Schema and Spec enable well-structured development and high code confidence.

To complement Java. The REPL lets me interactively exercise Java code. I can write performant and safe libraries in Java, and then use them in Clojure. I also find the data-centric aspect of Clojure (excellent build-in structures, literal syntax for easily creating those structures, functions that act well on abstractions of those structures) good for data processing.

This fits a sweet spot between Ruby and Java.

We use Clojure mostly for its "Minority Report"-like interactive development in situations that require 'semi-automatic programming' (data inspection, admin tasks, API exploration, scrapers, etc.). We have also used Clojure successfully to build some components of our stack very quickly and reliably, in the backend and the frontend.

just started learning clojure, maybe around two weeks or so. i'm addicted. this is what i want to be working with and learning for the foreseeable future. the elegance of the language is refreshing. the community is really amazing. i've finally found a language that fits my passion for programming.

Clojure simplifies and reduces the coding efforts involved in creating CloudRepo. The fact that it runs in the JVM gives us access to all the libraries that we could ever need. Our code base is much smaller and easier to reason about than it would have been had we gone with pure Java.

PrometheanTV has used .NET and C# for several back-end applications and services including the Morphic Video Task System utilized to stream video assets to a variety of video delivery platforms including, Akamai, Brightcove, and others.

Unity3d builds the app and scripts are written in C#. It receives first class support from the Unity3d developer and most plugins exist in C# in comparison to Javascript (the other supported scripting language)

Used to create personal projects that call for a more organized approach to software architecture. Great stable 3rd party libraries in NuGet for tasks like creating web apps (ASP.NET Core) and IoC containers.

The main Carbonmade backend / API is written in C# and is ready to run on the CLR. We currently host on Windows but are preparing to migrate to Linux when the CoreCLR stabilizes.