C# pure functional programming framework - come and get declarative!

The perfect companion for your Kotlin journey - Inspired by functional, data-oriented and concurrent programming

Safe and idiomatic TypeScript types to handle null, error, and async code handling: Maybe, Result, and Task types that are really nice.

The most powerful IO monad implementation in JS, possibly in any language!

Option, Result, and Either types for TypeScript - Inspired by Rust 🦀

Essential building-blocks for functional & safe TypeScript code

Functors, Applicatives, And Monads in Python

A cohesive & pragmatic framework of FP centric Scala libraries

learn-by-doing course/tutorial for functional programming on scala

Simple & Efficient data access for Scala and Scala.js

🥃 Functional Algebraic Data Types

In this article I try to explain why Haskell keeps being such an important language by presenting some of its most important and distinguishing features and detailing them with working code examples. The presentation aims to be self-contained and does not require any previous knowledge of the language.

FP-TS Cheat Sheet

Monad, Functional Programming features for Golang

Mu is a purely functional library for building RPC endpoint based services with support for RPC and HTTP/2

Mu (μ) is a purely functional framework for building micro services.

Either and Maybe monads for better error-handling in C++ ↔️

PHP Functional Programming library. Monads, common use functions and generic collections.

A library of Haskell-style morphisms ported to ES2015 JavaScript using Babel.

Boilerplate-free syntax for computations with effects