Top FUNCTIONAL GitHub Repositories & Tools (2026)

A powerful little TUI framework 🏗

A utility-first CSS framework for rapid UI development.

A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.

jank is the native Clojure dialect with seamless C++ interop.

Cucumber for golang

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 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.

Fastify 5 application boilerplate based on clean architecture, domain-driven design, CQRS, functional programming, vertical slice architecture for building production-grade applications 🚀

The Open Source Test Automation Platform.

JS to WASM compiler

MimIR is my Intermediate Representation

Typesafe, purely functional Computational Intelligence

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

A configuration as code language with rich validation and tooling.