We would recommend F# as an additional tool in the kit of any company building software on the .NET stack.

F# makes it easy to spend your time answering interesting questions about the domain and less time answering questions about the language.

Around 95% of the code in these projects has been developed in F#

Many languages are evolving to be ready for the future ... F# is already there.

F# will continue to be our language of choice for scientific computing.

I evaluated F# and found that for certain tasks it was better than C# in terms of performance while maintaining suitable readability

Large insurance company developed an entire pension quote calculator entirely in F# in under 100 days with no prior F# experience at all...

The benefits of functional programming in F# have given us a great advantage over our slow moving competitors.

Bohdan ... shows F#'s use for performing aggregations over large datasets, taking advantage of CPU and IO parallelism

F# encourages Reason Driven Development that leads to virtually bug-free code

F# is the night vision goggles I need when I go into the dark and attempt to solve previously unsolved problems.

F# allow us to keep the code simple even in complicated business cases.

F# is a powerful language and it is great to do cross platform development with it.

At ClearTax, We have built a whole product from the ground-up in F#. It's been running in production for a couple of years — this has been a great experience for us.

The efficient use of functional programming throughout the R&D cycle helped make the cycle faster and more efficient.

On a release of a complex rules engine and data transformation system to one of our customers, we were delighted to hear that across 90+ markets, not one of them found any issues with any of the calculations in the datasets. F# just works.

At Credit Suisse, we've been using F# to develop quantitative models for financial products

...your code is less error-prone...

F# rocks... building out various algorithms for DNA processing here and it's like a drug

F#...made it trivial...

F# brought correct defaults, simplicity and safety back to our coding

There is a noticeable interest in the developer community in Russia towards F#.

I could not recommend F# highly enough – I insist that you try it!

F#'s powerful type inference means less typing, more thinking

My team chose F# for its functional paradigm, maturity, and ease of interoperation with the .NET framework

At a major Investment Bank, we used F# to build an Early Warning Indicator System for Liquidity Risk

...we have decided to use F# as our functional language to have automatic integration with rest of the system...

With its new tools, the bank can speed development by 50 percent or more, improve quality, and reduce costs.

I can tell you, F# really saved us a ton of effort.

We see great potential for F# to be used as a scripting language in CAD; it fits very well for computational design challenges in the construction industry.

Grange Insurance parallelized its rating engine to take better advantage of multicore server hardware

F# terse syntax made the final code look really similar to the algorithm we wrote at first

The performance is phenomenal. We can now re-calculate the entire bank portfolio from scratch in less than a second and the response-time for single deal verification calculation is far below 100 milliseconds.

Solving a number of programming problems using the language convinced me of the supreme qualities of F#

When F# is combined with Visual Studio... productivity goes through the roof!

The compiler and the use of exhaustive pattern matching have saved us from what could’ve been many mistakes in production.

Using F# for cross-platform mobile development (Android, iOS) saves development time

...I have to say I love the language...

Type providers made working with external data sources simple and intuitive.

F# allowed us to mix Domain-Driven Design, Functional Programming and Azure to deliver a high quality web application.

The F# code is consistently shorter, easier to read, easier to refactor and contains far fewer bugs. As our data analysis tools have developed ... we've become more productive.

The results speak for themselves.

I keep being surprised by how compact and readable F# is...

The sensible defaults (immutability, non-nullability, algebraic data types, etc.) along with the power of the F# compiler enables our team to quickly and concisely develop systems.

Using a full F# stack to provide Server, Browser client and Mobile apps.

Programming in F# feels like writing out ideas rather than code

everyone gets really amazed when they try F# and experience its immense expressive power

With F# I can develop libraries in a fraction of the time.

In our engineering group at Microsoft we use F# for several projects

The simple, well-designed and powerful core of the language was perfect for introducing the fundamental concepts of functional programming.

...We use F# in oceanographic research to connect multiple visualizations together in time and space...

F# is central to Microsoft’s quantum algorithm research

it is fun language to code in

F# was so easy to pick up we went from complete novices to having our code in production in less than a week.

...The AI is implemented in F#...

...That's the reason we have chosen F# for our undergraduate functional programming class...

Anyone who has developed software can appreciate that while a working program is an asset the source code is a liability, especially when working in a regulated industry. F# lets us keep the codebase small and agile while delivering feature-rich and proven to work solutions.

The power and flexibility of the language lets us ship features faster, with fewer bugs.

Many attributes of the F# programming language make it an ideal choice for ...the exponentially growing volumes of molecular analysis data

F# is very popular among my students for the programming projects

For a machine learning scientist, speed of experimentation is the critical factor to optimize.

The use of F# demonstrates a sweet spot for the language within enterprise software

I have now delivered three business critical projects written in F#. I am still waiting for the first bug to come in.

By using F# and its strong type system, we were able to keep the code base consistent and easily adaptable to this ever-evolving and growing project.

F#'s language features not only made it a no-brainer for our project, but allowed us to produce composable, deterministic, and concise code.

F#...levels the playing field between beginners and experienced programmers.

"Speed. I am speed." works for F# like a charm.

...the core logic is written in F# wherever possible...

We recommend teaching F# because it is an extraordinary and flexible tool for teaching different areas of Computer Science

I am using F# to develop an API for data encryption using fully homomorphic encryption.

F# proved ideal for the complex data machinations required to build the models from raw Excel input.

The F# solution offers us an order of magnitude increase in productivty...