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Strongly-typed, functional-first programming language for writing simple code to solve complex problems
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What is F#?

F# is a mature, open source, cross-platform, functional-first programming language. It empowers users and organizations to tackle complex computing problems with simple, maintainable and robust code.
F# is a tool in the Languages category of a tech stack.
F# is an open source tool with 2.1K GitHub stars and 341 GitHub forks. Here’s a link to F#'s open source repository on GitHub

Who uses F#?

Companies
50 companies reportedly use F# in their tech stacks, including Olo, Huddle, and Property With Potential.

Developers
128 developers on StackShare have stated that they use F#.

F# Integrations

BenchmarkDotNet, FStar, .NET, Continuous, and .NET for Apache Spark are some of the popular tools that integrate with F#. Here's a list of all 6 tools that integrate with F#.

Why developers like F#?

Here’s a list of reasons why companies and developers use F#
F# Reviews

Here are some stack decisions, common use cases and reviews by companies and developers who chose F# in their tech stack.

Yshay Yaacobi
Yshay Yaacobi
Software Engineer · | 26 upvotes · 130.1K views
atSolutoSoluto
Docker Swarm
Kubernetes
Visual Studio Code
Go
TypeScript
JavaScript
C#
F#
.NET

Our first experience with .NET core was when we developed our OSS feature management platform - Tweek (https://github.com/soluto/tweek). We wanted to create a solution that is able to run anywhere (super important for OSS), has excellent performance characteristics and can fit in a multi-container architecture. We decided to implement our rule engine processor in F# , our main service was implemented in C# and other components were built using JavaScript / TypeScript and Go.

Visual Studio Code worked really well for us as well, it worked well with all our polyglot services and the .Net core integration had great cross-platform developer experience (to be fair, F# was a bit trickier) - actually, each of our team members used a different OS (Ubuntu, macos, windows). Our production deployment ran for a time on Docker Swarm until we've decided to adopt Kubernetes with almost seamless migration process.

After our positive experience of running .Net core workloads in containers and developing Tweek's .Net services on non-windows machines, C# had gained back some of its popularity (originally lost to Node.js), and other teams have been using it for developing microservices, k8s sidecars (like https://github.com/Soluto/airbag), cli tools, serverless functions and other projects...

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Kubernetes
Docker
C#
F#
.NET

I've used .NET for many years, but only in recent years, after Microsoft introduced .NET Core, I've found a new love and excitement for the technology again. The main driver for us using .NET Core is not that it is cross platform compatible, open source or blazingly fast (which it is!), but the fact that we can use (what we consider) the best programming languages (mainly F# and C#) to carry out our jobs without sacrificing the other benefits.

Today we run most of our web infrastructure on .NET Core in Docker containers, deployed into a Kubernetes cluster which spans across multiple time zones in the Google Cloud and we couldn't be happier. Due to the portability of the .NET Core platform we are even able to develop many new services as serverless functions with F# which has become an absolute game changer.

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F# Alternatives & Comparisons

What are some alternatives to F#?
PHP
Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.
JavaScript
JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.
Python
Python is a general purpose programming language created by Guido Van Rossum. Python is most praised for its elegant syntax and readable code, if you are just beginning your programming career python suits you best.
Java
Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!
HTML5
HTML5 is a core technology markup language of the Internet used for structuring and presenting content for the World Wide Web. As of October 2014 this is the final and complete fifth revision of the HTML standard of the World Wide Web Consortium (W3C). The previous version, HTML 4, was standardised in 1997.
See all alternatives

F#'s Stats

F#'s Followers
180 developers follow F# to keep up with related blogs and decisions.
Matthew Whited
medialwerk
fbatag
Carlos Rojas
dsschneidermann
Mohamma76685757
Samuel Ainsworth
Andrey Krisanov
pedroigor91
Himansu Sekhar