Awesome Functional Programming 
Tutorials and Articles
- Part 1: An Intro to Functional Programming Concepts in JavaScript
- Part 2: An Intro to Functional Programming Concepts in JavaScript
- Part 3: An Intro to Functional Programming Concepts in JavaScript
- Dipping into wu.js: autoCurry
- Haskell in ES6: Part 1
- Haskell in ES6: Part 2
- Haskell in ES6: Project Euler 1-5
- Don’t Be Scared Of Functional Programming
- Short cut fusion
- My favorite functional adaptors
- Functional pipeline
- Partial argument binding with heroin
- Too much curry
- Lodash to Ramda example
- Functional JavaScript interview question
- Configurable function pattern
- Combine promises with Maybe functors
- Test if a function is pure
- Functor + Applicative = Applier
- Point-free programming is not pointless
- Immutable JavaScript example
- Separate work from control flow using functional programming
- OO vs FP console log example
- Essence of functional programming
- Adapted point-free callbacks
- Counting predicates
- Run N promises in parallel
- Too much point-free
- Factorial using promises
- Reduce reigns supreme
- Binding vs partial application
- Passing multiple arguments in promises
- What is the difference between streams and functional reactive programming?
- Remove boilerplate from promise chains
- Use JavaScript functor today
- Heavy lifting
- Deep picking
- Partial application for options object
- Unapply attack
- Return a promise for cleaner API
- Imperative to compose example
- Variable assignment shortcut
- Favoring Curry
- The Philosophy of Ramda
- Ranging Near and Far
- Iffy Literals
- Why Ramda?
- Say "Hello" to Lo-Dash
- Functional JavaScript using Lo-Dash, an underscore.js alternative
- Currying in JavaScript
- Recursion in JavaScript
- How to Speed Up Lo-Dash ×100? Introducing Lazy Evaluation
- ECMAScript 6 and Array Comprehension
- Implicit Function Chaining in Lodash
- Lodash and ECMAScript 2015
- Applicative Programming In JavaScript With lodash.js
- Better Support for Functional Programming in Angular 2
- 16 Months of Functional Programming
- Functional UI and Components as Higher Order Functions
- Functional programming with Ramda
- Functional programming on frontend with React & ClojureScript
- Functional Programming should be your #1 priority for 2015
- Practical Functional Javascript with Ramda
- Streaming Logs with Transducers and Ramda
- The power of Immutability and React
- Tacit Ramda
- Composing Functions in JavaScript
- Partial Application in JavaScript
- Forcing Function Arity in JavaScript
- Wrapping JavaScript Functions
- Partial Application in JavaScript
- Functional JavaScript
- Compiling to lambda-calculus: Turtles all the way down
- Point-free programming style in F#
- Lazy, composable, and modular JavaScript
- Partially Applied Functions In JavaScript
- Neural Networks, Types, and Functional Programming
- Currying in JavaScript
- Why Curry Helps
- Factorial and Fibonacci in Kotlin
- Functional programming with Javascript
- Элементы функциональных языков
- Functional Programming should be your #1 priority for 2015 — OOP cannot save us from the Cloud Monster anymore.
- A practical introduction to functional programming
- Functional programming in R language
- Category Theory in JavaScript (must have)
- Understanding Continuations
- Category Theory for Promises/A+
- Tasks, microtasks, queues and schedules
- Polyfilling generators
- Lenses and Virtual DOM Support Open Closed
- Fixed-point combinators in JavaScript: Memoizing recursive functions
- Asynchronous programming and continuation-passing style in JavaScript
- By example: Continuation-passing style in JavaScript
- The Y Combinator (Slight Return)
- Leaking Space - Eliminating memory hogs
- Breaking down FRP
- What are some limitations/disadvantages of functional programming?
- Fun with promises in JavaScript
- Getting clever with lambda calculus
- Servant, Type Families, and Type-level Everything A look at advanced GHC features used in Servant
- Haskell-Style Fibonacci in Python
- Polyglot Twitter Bot, Part 1: Node.js
- Polyglot Twitter Bot, Part 2: Node.js + AWS Lambda
- Polyglot Twitter Bot, Part 3: Python 2.7 + AWS Lambda
- Functional programming with Ramda.js
- The Little Idea of Functional Programming
- What is a functor?
- What Is Functional Programming?
- Which Programming Languages Are Functional?
- An Introduction to Functional Programming in JavaScript
- JavaScript through the Lenses of Functional Programming
- How functional programming lenses work
- Basic Lensing
- Lenses with Immutable.js
- Использование линз на реальных примерах
- Input and Output
- Function Application and Definition
- Types & Kinds
- Effectful Haskell: Reader, Transformers, Typeclasses
- asynquence: The Promises You Don’t Know Yet (Part 1)
- asynquence: More Than Just Promises (Part 2)
- Going Async With ES6 Generators
- Getting Concurrent With ES6 Generators
- Currying versus partial application (with JavaScript code)
- Flatmap explained
- Applicatives are generalized functors
- Introduction to Category Theory in Scala
- Understanding Transducers
- Understanding Transducers in JavaScript
- Visualizing Concurrency in Go
- Lazy Iterables in JavaScript
- Difference between a Promise and a Task
- Switching from immutable.js to seamless-immutable
- A Gentle Introduction to Functional JavaScript: Part 1
- A Gentle Introduction to Functional JavaScript: Part 2
- A Gentle Introduction to Functional JavaScript: Part 3
- A Gentle Introduction to Functional JavaScript: Part 4
- From mathematics to map-reduce
- Continuations
- Elmish: Functional Programming in Javascript
- Functional Programming for JavaScript People
- Coroutine Event Loops in Javascript
- How Do I Learn Functional Programming In Javascript? - Linkpost
- Debugging Functional
- Why using
_.chainis a mistake - More points for lazy evaluation
- Trampolines in JavaScript
- Where combinator names come from
- Category Theory for Promises/A+
- Everything Reduced: Transducers in Javascript
- Javascript Transducers 2: Stateful & Gateful
- Functional Lenses, How Do They Work
- Creating an ES6ish Compose in Javascript
- More Functional Javascript: Reducing Promises, Ramda.js, & Arrow functions again
- Functional Programming is for Dummies
- Functional Programming Principles in Scala
- Introduction to Immutable.js and Functional Programming Concepts
- Functional Programming in JavaScript - The Functional Paradigm in a Familiar Language
- Using Lodash as a Collection of Micro-Libraries
- See How Easily You Can Create a Promise
- Achieving point-free JavaScript with R.converge / _.over
- Introduction to Functional JavaScript
- Functions
- Higher Order Functions
- Recursion
- 3. More Functional Swift
- 2. Functional Swift
- Swift closures and functions
- Debouncing and Throttling Explained Through Examples
- Foldable and Traversable
- How do Promises Work?
- Javascript generators and functional reactive programming\
- No promises: asynchronous JavaScript with only generators
- Functional Mixins in ECMAScript 2015
- CSP and transducers in JavaScript
- ES6 generators in depth
- Functional Programming for JavaScript People
- The allure of Scala.js
- Swift Guide to Map Filter Reduce
- 6 Reasons Why You Should Write Functional Code
- The Perfect API
- (Basic) Lazy Evaluation and Memoization in JavaScript
- Divide and Conquer with Algebraic Structures
- Async and await
- Applicative functors: definition and syntax
- Proofs of functor laws in Haskell
- The functor design pattern
- A 𝝺-CALCULUS INTERPRETER - in less than 200 lines of JavaScript
- Tree traversal in CoffeeScript
- Monoidal Contravariant Functors are actually useful!
- Infinite collections with ES6 generators
- Improving your functional CoffeeScript and JavaScript
- Comparing Javascript generators vs Clojurescript lazy-seq by solving a Fibonnaci problem
- Grasping Haskell: functors, applicatives and monads (part 1)
- Grasping Haskell: functors, applicatives and monads (part 2)
- Functor, Foldable, and Traversable Over Binary Tree
- lens over tea #1: lenses 101, traversals 101, and some implementation details
- Functional Components with React stateless functions and Ramda
- Support for deriving Functor, Foldable, and Traversable instances
- Fold (higher-order function)
- Making a Haskell (Scotty) web app and putting it on Heroku
- Promises + FP = Beautiful Streams
- Composability: from Callbacks to Categories in ES6
- Understanding F-Algebras
- Fold
- Catamorphisms in 15 Minutes!
- So You Want to be a Functional Programmer Series by Charles Scalfani
Monads
- Monads: Your App as a Function, Part 1
- Monads: Your App as a Function, Part 2
- The Marvels of Monads
- A Fistful of Monads
- Category Theory via C# (22) More Monad: Continuation Monad
- The Mother of all Monads
- Understanding Monads With JavaScript
- Promises are the monad of asynchronous programming
- A Monad in Practicality: First-Class Failures
- A Monad in Practicality: Controlling Time
- Monads in JavaScript
- Mindfuck: The Reverse State Monad
- Comonads, Monoids and Trees (awesome article)
- The Delimited Continuation Monad in Javascript
- Free Monads Are Simple
- Effectful Haskell: IO, Monads, Functors
- Functors, Applicative Functors, and Monads aren't that scary
- Functors, Monads, Applicatives – can be so simple
- Practical Intro to Monads in JavaScript
- The Indexed State Monad in Haskell, Scala, and C#
- Who in Their Right Mind Would Use Monads in Clojure?
- Let’s Make a Monad
- Let’s Put jQuery in a Monad
- Monads in C++
- Monads in plain JavaScript
- Practical Intro to Monads in JavaScript: Either
- Monads, promises, arrays in Javascript
- Monad syntax for JavaScript
- Translation from Haskell to JavaScript of selected portions of the best introduction to monads I’ve ever read
- Monads
- A Gentle Intro to Monads … Maybe?
- Monads - function composition on steroids
- Rx for Haskell - My First Monad
- Monads for Dummies
- Week 3 - Introduction to Monads in JavaScript
- Монады в Javascript
- Аналоги монад Haskell
- Functors, Applicatives, and Monads in Plain English
- what does “lifting” mean?
- Free and Freer Monads: Putting Monads Back into Closet
- Akh - Monad Transformers for Javascript
- Decision Trees Are Free Monads Over the Reader Functor
- Собираемся с духом и перестаем бояться монад
- Утилиты работы с монадами
- Ru/IO Inside
- Foldable.mapM_, Maybe, and recursive functions
- Of Algebirds, Monoids, Monads, and Other Bestiary for Large-Scale Data Analytics
- Comonads as Spaces
- MonadFix
- Monads - Array, Promise and Maybe monads. Plus Docker is a functor
- The Marvellously Mysterious JavaScript Maybe Monad
Purescript
- Building Apps with PureScript and React
- Frontend Functional Programming with PureScript and Elm
- Writing PureScript Bindings for a jQuery Plugin
- PureScript on Android
- Rendering a Tic-Tac-Toe board with purescript-react
- Playing Tic-Tac-Toe using purescript-signal
- Fighting node callback hell with PureScript
- Approximating PI With PureScript
- Learn X in Y minutes - Where X=purescript
- PureScript for the Haskeller Where to get started in PureScript for the Haskell programmer
- Polyglot Twitter Bot, Part 4: PureScript
- WebApps with PureScript and RactiveJS
- Managing Application State with PureScript & Redux
- PureScript with Leaflet Experiments
- Purescript will make you purr like a kitten
- PureScript + React + Electron
- Getting started in PureScript (Part 1)
- Getting Started with Purescript for Web Development
- PureScript for Front End Developers
- A Real-World PureScript FE Build Setup
- Making a simple node program with Purescript
- PureScript — An Intro for JavaScript Hackers
- Parsing complex foreign objects in PureScript
- Writing a simple Telegram chat bot in Purescript
Elm
- Building a Live-Validated Signup Form in Elm
- Data Structures in Elm
- Walkthrough: Introducing Elm to a JS Web App
- Static site generation in Elm
- Архитектура приложения в Elm
- Начало проекта на Elm
- Optimistic UI and Reactive Programming with Elm
- Understanding Signal.forwardTo
- Learning FP the hard way: Experiences on the Elm language
- Architecture in Elm
- Switching from imperative to functional programming with games in Elm
- How Elm made our work better
- Elm for the Frontend, Right Now
- Introduction to ML in Elm
- Making a scroll table with Elm
- A simple introduction to using Elm ports
- How I wrote a hybrid Elm/Javascript Node.js application
- Getting Started with Elm
- Understanding Elm: Signals, Mailboxes, Addresses, and Actions
- Using Mailboxes in Elm
- Developing Games In Elm - Signals
- Signals in Elm
- Elm by Example: Soup to Nuts - Part 1
- An Opening Example of Elm: building HTML by parsing parameters
- Real World Elm - Part 2 - Form Validation
- Real World Elm - Part 1
- Deconstructing Your First Elm App
- Introduction to FRP in Elm
- Tasks and Effects in Elm
- Elm Native UI: Writing a React Native app in Elm
- Learn X in Y minutes - Where X=Elm
- A Concise Introduction to Elm
- Elm by Example: Soup to Nuts - Part 1
- Structured TodoMVC example with Elm
- 10 reasons why you should give Elm a try
Books
- Functional Programming in C#
- Mostly adequate guide to FP (in javascript)
- Mostly adequate guide to FP (in javascript) - russian version
- Functional JavaScript
- Functional Javascript Workshop (console based tutorial)
- Functional Programming in JavaScript - Dan Mantyla
- Functional JavaScript: Introducing Functional Programming with Underscore.js - Michael Fogus
- A big list of books about functional programming
- PureScript by Example
- Functional Programming with Bananas, Lenses, Envelopes and Barbed Wire
- Lenses in Functional Programming
- The Weird World of Bi-Directional Programming
- Functional Programming in JavaScript
- Excerpt Funtional Programming JavaScript
- Elm tutorial book
- Purescript Pux
- The Neophyte's Guide to Scala
- Elm by Example - Grzegorz Balcerek
- Learn you a Haskell for great good! (A beginner's guide)
- Learning Haskell
- Programming with Refinement Types - An Introduction to LiquidHaskell
- learning Scalaz
- Learn you some Erlang for great good!
- О Haskell по-человечески
- F# for Fun and Profit eBook
- An Introduction to Elm
- A book about functional programming in JavaScript
- Learn F#
Resources
- Blog Jakub Arnold
- Primers
- Railway Oriented Programming
- Материалы курсов по Clojure, бесплатно и онлайн
- 24 Days of PureScript
- Category Theory for Programmers: The Preface
- The official supporting materials repository for LambdaConf 2015
- The Glasgow Haskell Compiler. Simon Marlow and Simon Peyton-Jones
- diagrams is a powerful, flexible, declarative domain-specific language for creating vector graphics, using the Haskell programming language.
- 24 Days of GHC Extensions
- https://rosettacode.org/wiki/Category:Haskell
- Corecursion
- Pointfree.io - convert Haskell code into pointfree Haskell code
- Typeclassopedia
- Philip Wadler's home page
- Javascript Monad Transformers
- Functor
- http://fprog.ru
- Scala Tour
- An es6 js maybe monad, using generators
- Trying to apply ES6 generators to create monad comprehensions. Unfortunately it looks like this will not work with monads that contain multiple values, such as arrays
- Free monad based thread simulation and FRP constructs written in JavaScript
- Code Samples Functional Programming in JavaScript, Manning 2016
- Visual programming meets Haskell
- Luna. Visual and textual functional programming language with a focus on productivity, collaboration and development ergonomics
- A curated list of awesome functional programming stuff in js
- Community driven Elm guide for JS people
- An overview of Elm syntax and features
- Conal Elliott blog
- Brian Lonsdorf on medium
- Elm weekly
- Almost all about monads
- Notes, Thoughts, & Examples derived from reading Functional Javascript by Michael Fogus
- Simple examples to help you understand ES6
- Functorial Blog - A blog about functional programming
- http://functionaljavascript.blogspot.com
- http://buzzdecafe.github.io
- http://blog.codeprototype.com
- http://simplectic.com/blog
- http://joneshf.github.io
- http://www.luisatencio.net
- http://bartoszmilewski.com
- http://rebcabin.github.io
- http://blog.jakubarnold.cz
- https://juxt.pro/radar.html - The 2016 JUXT Clojure Technology Radar
- http://clojurewerkz.org - A growing collection of open source Clojure libraries
- http://www.parsonsmatt.org - Elm, Haskell, Purescript
- Lo-Fi Learning - Advanced topics from our blackboard to your screen
- FunctionalTalks.org - Brilliant people giving brilliant talks on Functional Programming.
- functional-javascript-workshop - a functional javascript workshop. No libraries required (i.e. no underscore), just ES5
- gist of functional utils which written on ES6
- Answers to the exercises from https://github.com/MostlyAdequate/mostly-adequate-guide
- Introduction to Functional Programming (course from edx.org)
- functional-programming-jargon - Jargon from the functional programming world in simple terms
- Category theory jargon cheat sheet
- js-funcional - A Cookbook for writing FP in JavaScript using ES6
- functional-frontend-architecture - A functional frontend framework.
- A book series on JavaScript
- FP101x - Functional Programming MOOC 2015 Content Repository
- Functional Programming in Javascript (Online tutorial)
- A list of functional javascript resources
- Contravariance is the Dual of Covariance
- Functional Programming concepts, examples and patterns illustrated in Haskell, Ocaml and Python
- A puzzle game written on purescript
- Total functional programming (ESFP)
- Code, exercises, answers, and hints to go along with the book "Functional Programming in Scala"
- Functional programming (page on wiki of Haskell)
- Category Theory Presentation
- A Guide to Functional Programming Lingo for JavaScripters
- Haskell monads for learning purposes in javascript
- Cheat sheet for Monads in Haskell
- Monad
- Monad (in computer science)
- The Indexed Continuation Monad in Haskell, Scala, and C#
- Informatics 1: Functional Programming
- Source code for blog post Journey from procedural to reactive JavaScript with stops
- Functional Programming in Javascript (online exercises)
- Category Theory for Programmers: The Preface
- Building a modern functional compiler from first principles
- Archive the best resources surrounding the functional programming paradigm for Javascript developers
- Ramtuary REPL
- Haskell for Maths
- Y combinator
- A collection about Functional Reactive Programming in Swift
- Patterns in Functional Programming
- What I Wish I Knew When Learning Haskell
- Learn Haskell
- Awesome Haskell
- Введение в функциональное программирование на скале
- Monoidal Contravariant Functors and Transducers
- Functional Programming Resources In JavaScript
- Unofficial a documentation of lodash-fp
- Collection of examples on places where Elm is different to Haskell
- Kickstart your web development with Elm
- Explorations in Functional Land
- Coeffects: Context-aware programming languages
- Formalization of the Dependent Object Types (DOT) calculus
- Dependent Object Types (DOT)
- Neon - Experimental PureScript standard library
- JS-monads-stable
- Pragmatic functional programming in JavaScript - Workshop material
- cor - The Language of the Web
- djinn - Generate Haskell code from a type
- forwardcourses about functional programming
Combinators
- To Dissect a Mockingbird: A Graphical Notation for the Lambda Calculus with Animated Reduction
- Combinator Birds
- Deriving the Y Combinator in 7 Easy Steps
- B, C, K, W system
- Комбинаторы — это просто!
- Комбинаторная логика как формальная система
- combinators-js
- SKI combinator calculus
- Combinators
- Fixed-point combinator
- Combinatory logic
- Collected Lambda Calculus Functions
- Combinatory Logic
- Combinatory Logic: Finding and Evaluating Combinators
- Maths - Combinatory Logic
- Lambda Calculus
- From Lambda calculus to Combinator Calculus
- The SKI Combinator Calculus a universal formal system
- Lambda Calculus
- Combinatory logic
- The Y Combinator (no, not that one). A crash-course on lambda calculus
- The Quantum Electrodynamics of Functional JavaScript
- Applicative Functor / SKI combinator calculus
Presentations
- Awesomely descriptive JavaScript with monads
- Functional Programming from Brian Lonsdorf (awesome presentation)
- Functional Programming Patterns (must have)
- Domain Modeling in a Functional World
- Functional Programming in JavaScript
- ECMAScript 6 Quiz
- Functional Programming from Scott Sauyet
- FKit: Everyday Functional Programming in JavaScript
- Ramda: Practical Functional Javascript
- Category theory, Monads, and Duality in the world of (BIG) Data
- Functional Programming in 5 Minutes
- Introduction to Functional Programming
- Monads
- Pragmatic Functional Programming
- Intro to Functional Programming
- Who's More Functional: Kotlin, Groovy, Scala, or Java?
- Introduction to Functional Programming in JavaScript
- Category Theory: An Abstraction for Anything
- Немного о функциональном программирование в JavaScript
- Category theory for beginners
- Getting Started with PureScript by Michael Ficarra
- Functional Programming Forever
- Why Haskell?
- PureScript
- Анонимные записи в Haskell
- Better know a language PureScript
- Functional Patterns in JavaScript
- Collections libraries in JavaScript
- Transducers - Reducing complexity with reducers
- Remove the Boilerplate
- Functional Programming. Patterns in Scala
- Map, Flatmap and Reduce are Your New Best Friends: Simpler Collections, Concurrency, and Big Data
- Functional Programming in JavaScript by Luis Atencio
- CodeMash: Functional Programming Basics in ES6
- Fluent Conf: Rise of Async JavaScript
- Монады для барабанщиков
- Building Functional Islands by Mark Jones
- Reactive UIs with Halogen
- Fun* JavaScript Workshop - Dr. Gleb Bahmutov PhD
- TYPESAFE SQL IN HASKELL - AN INTRODUCTION TO OPALEYE
Videos
- Jason Ganetsky on Making a Fast Curry: Push/Enter vs. Eval/Apply for Higher-order Languages
- Erik Meijer: Functional Programming
- Lambda Days 2015 - Kuba Waliński - Fun with Functional JavaScript
- Functional Programming with Kotlin
- Category theory for JavaScript programmers
- "Everything Old is New Again: Quoted Domain Specific Languages" by Philip Wadler
- Classroom Coding with Prof. Frisby
- FP-Syd - PureScript: An Overview for Haskellers by Tim Docker (Jul 2015)
- Intro to PureScript -- Utah Haskell Meetup
- Haskell Programming Tutorial
- Monad a day 1: Reader
- Monad a day 2: Future
- Monad a day 3: State
- Lenses Quick n’ Dirty
- Frontend Masters Workshop finish up
- A Million Ways to Fold in JS
- Coyoneda in Javascript
- Freer Monad (We define Maybe and IO in the freer monad)
- Free(er) Monads in JS pt 2 (Defining an interpreter for multiple natural transformations)
- What is pure functional programming, and how it can improve our application testing? by Luca Molteni
- How to Create Tetris in Elm
- Scott Wlaschin - Railway Oriented Programming — error handling in functional languages
- Lambda Jam 2014 - Eric Meijer - The Lost Art of Denotational Semantics
- SKI School: The Combinator Calculus Demystified
- Erik Meijer - Functional Programming From First Principles
- Russian videos about clojure and clojurescript
- Parallel and Concurrent Haskell
- Functional programming patterns for the non-mathematician (cut)
- Brian Beckman: Don't fear the Monad
- Brian Beckman: The Zen of Stateless State - The State Monad
- Monads and Gonads
- Haskell Tutorial
- YOW! Lambda Jam 2016 Conor McBride - What are Types for, or are they only Against?
- Phil Freeman - Fun with Profunctors
- Monads, Monoids and Composition w/ Functional JavaScript
- «PureScript livecoding» by Dmirti Bushenko
- Learning Functional Programming with JavaScript by Anjana Vakil at JSUnconf 2016
Libraries
Javascript
- Lodash - A JavaScript utility library delivering consistency, modularity, performance, & extras
- Ramda - A practical functional library for Javascript programmers
- functional.js - The functional JavaScript library
- fantasy-land - Specification for interoperability of common algebraic structures in JavaScript
- wu.js - is a JavaScript library providing higher order functions (such as map, filter, and reduce) for ECMAScript 6 iterators
- pointfree-fantasy - Point free wrappers for fantasy land
- folktalejs - Robust, Scalable, DRY. Folktale is a suite of libraries for generic functional programming in JavaScript that allows you to write elegant modular applications with fewer bugs, and more reuse
- fn.js - A JavaScript library built to encourage a functional programming style & strategy
- bilby.js - is a serious functional programming library
- lazy.js - is a functional utility library for JavaScript, similar to Underscore and Lo-Dash, but with an underlying engine that supports many more use cases than those libraries, while offering comparable or superior performance in most scenarios
- monet.js - Monadic types library for JavaScript
- lamb - A lightweight, and docile, JavaScript (ES5) library to help embracing functional programming
- sanctuary - Refuge from unsafe JavaScript official site
- trine - A utility library for modern JavaScript
- lodash-fp - lodash with auto-curried iteratee-first data-last methods
- alicates - Small library for functional programming with ES2015+
- creed - Sophisticated and functionally-minded async with advanced features: coroutines, promises, ES2015 iterables, fantasy-land
- js-csp - Communicating sequential processes for Javascript (like Clojurescript core.async, or Go)
- transducers-js - A high performance Transducers implementation for JavaScript
- transducers.js - A small library for generalized transformation of data (inspired by Clojure's transducers)
- csp - CSP/Actor/Transducer Experiments
- underarm - Transducers Inspired by Underscore
- transduce - JavaScript transducers
- fkit - A functional programming toolkit for JavaScript
- contra - Asynchronous flow control with a functional taste to it
- neo-async - Neo-Async is thought to be used as a drop-in replacement for Async, it almost fully covers its functionality and runs faster
- async - Async utilities for node and the browser
- nimble - A really tiny functional JavaScript and async flow-control library
- udon - Practical functional programming in JavaScript
- culljs - Functional javascript for adults - no cushions included
- it.js - Chainable object-oriented functional combinators
- linq - linq.js - LINQ for JavaScript library
- Sugar - A Javascript library for working with native objects
- cat.js - Category Theory for JavaScript
- f - Implementing native versions of Haskell functions according to JavaScript ES6 standards
- este - Dev stack and starter kit for functional and universal React web apps
- Slack - Lazy functional JS library
- nux - A Push-Based Functional Reactive UI Library for the Web
- ftoer - A pragmatic library facilitating functional programming in javascript
- fops - Curried, functional operators
- nodent - Asynchronous Javascript language extensions
- funkit - Functional toolkit for javascript
- funko - Naive minimalistic functional programming library
- fantasy-lenses - Composable, immutable getters and setters
- chunkify - A functional API to unblock your JavaScript
- co-functional - co-functional is a MIT licenced library that provides several functions for use with the co library
- redash - Compact library for writing performant functional JavaScript
- iterablejs - Lazy-loading wrapper for iterable items and common functional programming operations
- async-csp - CSP style channels using ES7 async/await
- conjs - a featured fork of mori, with core.async included
- switch-fn - Write a functional switch statement
- asyncawait - Callback heaven for Node.js with async/await
- kneden - Transpile ES7 async/await to vanilla ES6 Promise chains: a Babel plugin
- asyncbox - A collection of ES7 async/await utilities
- medium - CSP-style channel library using ES7 async/await keywords
- prelude - Base functional programming utils for mostjs packages
- fantasy-birds - port of the haskell package Data.Aviary.Birds. Every thing for your combinatory needs
- scour - Traverse objects and arrays with ease
- monad-transformers - Practical monad transformers for JS
- lazy-either - A lazy implementation of the Fantasy Land Either type
- parallel-future - Run Futures in parallel
- futurize - Turn callback-style functions or promises into futures
- daggy - Library for creating tagged constructors
- barely-functional - tiny (2.7kb) functional programming library using native es5/6 operations
- fantasydo - Do-notation for javascript fantasy land
- linq.ts - LinQ for TypeScript
- Fluture - A complete Fantasy Land compatible Future library
- 1-liners - Functional tools that couldn’t be simpler
- immutable-ext - fantasyland extensions for immutablejs
- optics - This library is an implementation of profunctor optics using JS, heavily influenced by the PureScript Profunctor Lenses and Kmett's Lens libraries.
- monady - Composable monads for functional async flow
- pure-random - A purely functional random number generator
- kewler - Simple functional and immutable color manipulation library
- static-land - Specification for common algebraic types in JavaScript based on Fantasy Land
- Idealist - Functional HTTP micro-framework
- cali - A JavaScript utility library with a functional programming flavor
- union-type - A small JavaScript library for defining and using union types
- fantasy-frees - Free monads
- ramda-fantasy - Fantasy-Land compatible types for easy integration with Ramda.js
- fantasy-derivations - Use methods on ADTs whether or not they're defined
- fantasy-do - Do notation for javascript
- future-io - A fantasy-land compliant monadic IO library for Node.js.
- List-in-JS - List in JS provides List like List of Haskell. List in JS implements Fantasy Land Specification. List is a Setoid, a Semigroup, a Monoid, a Functor, an Applicative Functor, Foldable, Traversable, a Chain and a Monad
- doM.js - "do" monad syntax for JavaScript
- do-notation - Do notation for Fantasy Land monad types
- burrido - Do-notation for JavaScript
- monadic - Do-notation and Monads for JavaScript
- async-ls - Higher order functions, compositions and common operations for asynchronous programming in LiveScript
- florida - Pure functional accessor factories in js
- mandolin - Painlessly enhance your JavaScript with monadic types
- operajonal - Implementation of free monads in JavaScript, based on Haskell's operational package
- free - Combination of a free applicative functor and free monad
- freeky - Free monad Collection
- immutagen - A library for simulating immutable generators in JavaScript
- gentoo - Tools for ES6 generators
- TsMonad - Little monad library designed for TypeScript
- jabz - Powerful and practical abstractions for JavaScript and TypeScript. Functors, Monads, Traversables and all that jazz
- async-to-gen - Transform async functions to generator functions with speed and simplicity
- streamjs - Lazy Object Streaming Pipeline for JavaScript
- chained-promise - Functional programming tools for recurring promises
- maryamyriameliamurphies.js - A library of Haskell-style morphisms ported to ES2015 JavaScript using Babel
- asyncp - Port of the async library to use Promises
- flow-static-land - Implementation of common algebraic types in JavaScript + Flow
Livescript
- prelude.ls - is a functionally oriented utility library
- monolith-ls - Experimental fork of
prelude-ls, gives a more functional feel to prelude.
Java
- TotallyLazy - A complete functional environment for Java
- Frege - is a Haskell for the JVM. It brings purely functional programing to the Java platform.
- javaslang - More Control. Less Code. Functional Library for Java 8+
- functionaljava - Functional programming in Java
- yeti - Functional programming language for JVM
- Jinq - LINQ-style queries for Java 8
- linq4j - A port of LINQ (Language-Integrated Query) to Java
- javaz - Java 8 lambda experiment
Clojure/ClojureScript
- cats - Category Theory and Algebraic abstractions for Clojure and ClojureScript
- jank - A statically typed functional programming language
- lux - The Lux Programming Language
ClojureScript
Scala
- scalaz - An extension to the core Scala library for functional programming
- cats - Lightweight, modular, and extensible library for functional programming
- macroid - A modular functional UI language for Android
- Structures - Functional type classes for Scala
- rillit - Boilerplate-free Functional Lenses for Scala 2.10
Kotlin
- Forge - Functional style JSON parsing written in Kotlin
- funktional - Kotlin monads
- funKTionale - Functional constructs for Kotlin
- kotlinslang - A functional library for Kotlin that provides functional control structures. Inspired by javaslang
F#
- FSharpx.Extras - Functional programming and other utilities
- chiron - Functional JSON library for F#
- hekate - Purely Functional Graphs for F#
- freya - Functional-first web stack, including an HTTP finite state machine, built on top of OWIN
- micron - A minimalistic pure functional programming language
- Lw - is a general-purpose statically-typed functional language with advanced features.
- Streams - A lightweight F#/C# library for efficient functional-style pipelines on streams of data
- Fable - F# to JavaScript Compiler
- ReactFSharp - Proof of concept demo implementing a React like declarative UI API for F# on top of RX
- Juniper - FRP (Functional Reactive Programming) for the Arduino and other microcontrollers
C#
- language-ext - C# functional language extensions and 'Erlang like' concurrency system
- functional.net - Library of functions and list extensions for C#
- FuncSharp - Functional programming in C#
- monadsharp - A collection of monads for C# that provide some functional programming flavor
- csharp-probability-monad - A probabilistic programming framework for C#
Swift
- Swift for Windows - is a free, open source tool that provide runtime environment for swift programming language to compile and run on Windows OS with graphical interface
- Dollar.swift - A functional tool-belt for Swift Language similar to Lo-Dash or Underscore.js in Javascript
- Swiftz - Functional programming in Swift
- LlamaKit - Collection of must-have functional Swift tools
- Prelude - Swift µframework of simple functional programming tools
- Swiftx - Functional data types and functions for any project
- Concurrent - Functional Concurrency Primitives
- SINQ - LINQ for Swift - Swift Integrated Query
- Argo - Functional JSON parsing library for Swift
- Interstellar - Simple and lightweight Functional Reactive Coding in Swift for the rest of us
- Funky - Functional programming tools and experiments in Swift
Python
- fn.py - Functional programming in Python: implementation of missing features to enjoy FP
- funcy - A fancy and practical functional tools
- toolz - A functional standard library for Python
- f - Functional stuff for Python
PHP
- functional-php - Primitives for functional programming in PHP
- Non-standard PHP library (NSPL) - Compact functional programming oriented code and more
- Pinq - PHP Integrated Query, a real LINQ library for PHP
- YaLinqo - Yet Another LINQ to Objects for PHP
- ginq - LINQ to Object inspired DSL for PHP
- pramda - Practical Functional Programming in PHP
Rust
Julia
- Lazy.jl - Functional programming for Julia
- FunctionalCollections.jl - Functional and persistent data structures for Julia
Go
- go-linq - .NET LINQ-like query methods for Go
- The Oden Programming Language - Oden is an experimental, statically typed, functional programming language, built for the Go ecosystem
Haskell
- futhark - A data-parallel functional programming language
- reflex - Practical Functional Reactive Programming