immutability topic
functional-js
Functional Programming in JavaScript
better_settings
⚙ Settings for Ruby apps – fast, immutable, better.
docile
Docile keeps your Ruby DSLs tame and well-behaved
http4k
The Functional toolkit for Kotlin HTTP applications. http4k provides a simple and uniform way to serve, consume, and test HTTP services.
Paguro
Generic, Null-safe, Immutable Collections and Functional Transformations for the JVM
mobx-keystone
A MobX powered state management solution based on data trees with first class support for Typescript, support for snapshots, patches and much more
redhooks
Predictable state container for React apps written using Hooks
php-slang
The place where PHP meets Functional Programming
chaos
The Chaos Programming Language