#functional-programming

Aardvark.Base is the foundation of the open-source Aardvark Platform for visual computing, real-time graphics, and visualization.

A functional, Lisp-inspired language that compiles to PHP. Inspired by Clojure, Phel brings macros, persistent data structures, and expressive functional idioms to the PHP ecosystem.

Functional programming library for Go 1.24+, inspired by fp-ts. Uses generic type aliases for a clean, composable API. Provides Option, Either, Result, IO, IOResult, Reader, and ReaderIOResult monads, plus optics (Lens, Prism, Traversal) for immutable data manipulation. Supports Functor, Applicative, and Monad abstractions with do-notation-style

Python supercharged for the fastai library

Expressive types for Spark.

Darklang main repo, including language, backend, and infra

Functional programming for Python

A Python stream processing engine modeled after Yahoo! Pipes

Build streaming pipelines in PHP. The missing pipe operator. General-purpose collections pipeline. Since 2017.

ldbc (Lepus Database Connectivity) is a pure functional database connectivity layer for Scala 3. It provides a type-safe API with first-class support for multiple effect systems — Cats Effect 3, ZIO, and plain Future.

Effect Language Service Plugin (LSP)

Apache Groovy: A powerful multi-faceted programming language for the JVM platform

A lightweight, distinctly Scala take on functional abstractions, with tight ZIO integration

Meow Programming Language — a cat-themed functional programming language that transpiles .nyan files to Go

Flow Based Programming in Go

A Functional Library for TypeScript based on Scala

Kickstarter for Android. Bring new ideas to life, anywhere.

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

java port of Underscore.js

Functional programming toolbox

ESLint plugin to disable all mutation in JavaScript and Typescript... 2

Useful, common monads in idiomatic Ruby

Functional programming utilities for TypeScript. Result types, pattern matching, async pipelines.