Open-source alternatives to Most

DEFUNCT trifling functional views

Core Data with ReactiveCocoa

Bacon.js is a JavaScript functional reactive programming library used for coordinating complex asynchronous data flows. It functions as an observable event stream framework and an asynchronous data flow orchestrator, allowing developers to model events as declarative streams and properties. The library distinguishes itself through its ability to manage reactive state and synchronize timing across multiple sources. It provides specialized mechanisms for atomic state synchronization to prevent glitches in derived properties and offers advanced coordination strategies such as asynchronous stream

Haskell language features and standard libraries in pure Python.

Lightweight observations and bindings in Swift

An experiment in adding functional pattern matching to JavaScript

Open source implementation of Apple's Combine framework for processing values over time.

Flexible, stream-based abstraction for launching processes

Functional Programming Python - Pain

Ramda Adjunct is the most popular and most comprehensive set of functional utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.

A reactive atomic state engine for React(including React 18) and all React like, carrying dependency collection feature, supporting fine-grained updates.

An extremely small, intuitive and fast functional utility library for JavaScript

tiny (2.7kb) functional programming library using native es5/6 operations

Functional programming date manipulation library

General purpose utils & apis for interacting with vert.x

Javascript Generalized Parser Combinators

Microscopic functional programming context for TypeScript

Do notation pipes for Promise-based or pure functions which easy to mock

Powerful pipes for TypeScript, that chain Promise and ADT for you 🚌 -> ⛰️ -> 🚠 -> 🏂 -> 🚀

Tiny TypeScript functional dependency injection, based on AsyncLocalStorage. Supports Node.js, Deno

TypeScript multimethods inspired by Clojure multimethods

Functors, Applicatives, And Monads in Python

Functional tools that couldn’t be simpler.