C# functional language extensions - a base class library for functional programming

An advanced, but easy to use, platform for writing functional applications in Java 8.

Lambda the ultimate Pattern Factory: FP, Haskell, Typeclassopedia vs Software Design Patterns

Extensions for F#

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

Eff monad for cats - https://atnos-org.github.io/eff

Functional programming great resources

Functional Programming Unorthodoxly Adjusted to Client-/Server-side Javascript

The Monad Transformer Library

A mini Scala utility library

A framework to create embedded Domain-Specific Languages in Scala

Functional Programming library for Java

A continuation-based backtracking logic programming monad

Monadic effects and equational reasonig in Coq

Practical effect composition library based on abstract wrapping type and the free monad

A monad, perhaps.

Resource Acquisition Is Initialization

Memoization monad transformer

Solutions to exercises from the book Haskell Programming

Scala library for nice business logic oriented, for-comprehension-style error handling