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FSharpPlus

Extensions for F#

From fsprojects·Updated May 26, 2026·View on GitHub·

F#+ is a base library that aims to take F# to the next level of functional programming. The project is written primarily in F#, distributed under the Apache License 2.0 license, first published in 2013. Key topics include: arrow-functions, computation-expressions, extensions, f-sharp, generic-functions.

Latest release: v1.9.1FSharpPlus 1.9.1
January 11, 2026View Changelog →

FSharpPlus

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Made with F#
License - Apache 2.0

F#+ is a base library that aims to take F# to the next level of functional
programming.

What if we imagine F# as more than it is?

F#+ builds upon FSharp, using generic programming techniques to help
you avoid boiler plate code. However, by naming conventions and signatures
it can be seen to 'enhance' rather than 'replace' existing patterns as much
as possible.

Getting started is easy since you can start with enjoying some of the extensions
and generic functions, but you will find other parts of F#+ unfold before you
and become useful the deeper in you get.

See the documentation for more details.

Seeking Help

We're happy to help with any questions, including complete beginners!

Please do join us to chat on:

...or you can ask a question on stack overflow
with tag F#+

Contribute

The project is hosted on GitHub where you can report issues, fork the project and submit pull requests.
Opening issues for discussion or asking questions is welcome, don't hesitate to fill the New Issue form!

  • The Developer Guide contains details about idioms of implementation in terms of how the type class concept translates in the implementation.
  • The Design Guidelines contains details about design choices guiding the implementation with regard to naming, and choices impacting runtime and compile time performance.

Contributors

Showing top 12 contributors by commit count.

View all contributors on GitHub →

This article is auto-generated from fsprojects/FSharpPlus via the GitHub API.Last fetched: 5/30/2026