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Top IMMUTABILITY GitHub Repositories & Tools (2026)

Discover the most starred and trending open source tools tagged with #immutability.

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2 matching projects · updated Oct 3, 2026 How we rank ↗

#1 TRENDING unadlib/mutative TypeScript 2022

Efficient immutable updates, 2-6x faster than naive handcrafted reducer, and more than 10x faster than Immer.

◇ immer ◇ immutability ◇ immutable ◇ mutable

34 ↑ +1 today

#2 TRENDING phel-lang/phel-lang PHP 2020

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.

◇ clojure ◇ compiler ◇ dsl ◇ functional-programming

33 ↑ +1 today

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Top IMMUTABILITY GitHub Repositories & Tools (2026)

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