Life & fun · alternatives · 2026

Underscore.js for Objective-C is a library for iOS developers that brings functional programming utilities to Objective-C. It provides a collection of tools for working with arrays, objects, and functions, making… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Underscore.js for Objective-C launched in 2012; newer entries below may have overtaken it.

1. 1
   A command-line utility-belt for hacking JSON and Javascript▲68

   Command-line utility-belt for hacking JSON and Javascript. - GitHub - ddopson/underscore-cli at hn

   2012 · github.com · its alternatives →

2. 2
   JavaScript Transducers with Underscore API▲19

   :raising_hand: Transducers Inspired by Underscore. Contribute to kevinbeaty/underarm development by creating an account on GitHub.

   2014 · github.com · its alternatives →

3. 3
   Cupertino.js – A JavaScript to Cocoa compiler and runtime▲77

   2014 · github.com · its alternatives →

4. 4
   JuliusJS – Speech recognition in JavaScript▲202

   A speech recognition library for the web. Contribute to zzmp/juliusjs development by creating an account on GitHub.

   2014 · github.com · its alternatives →

5. 5KJ
   Kerning.js — Take control of your web typography▲154

   2011 · endtwist.github.com · its alternatives →

6. 6
   NSString + Ruby▲87

   2013 · github.com · its alternatives →

7. 7
   A Y Combinator for Objective-C▲97

   A Y-Combinator for Objective-C. Contribute to jballanc/objc-ycomb development by creating an account on GitHub.

   2011 · github.com · its alternatives →

8. 8UJ
   Underline.js is like underscore.js but using modern ES7 syntax▲8

   2016 · ankurp.github.io · its alternatives →

9. 9
   FunctionKit – Approachable functional concepts brought to Swift▲51

   A framework for functional types and operations designed to fit naturally into Swift. - mpangburn/FunctionKit

   2018 · github.com · its alternatives →

10. 10
    Render▲169

    React-inspired Swift library for writing UIKit UIs

    2016 · github.com · its alternatives →

11. 11
    ObjectiveC2Swift▲155

    A tool that converts Objective-C to Swift

    2015 · its alternatives →

12. 12
    1 KB JavaScript library for building front end apps▲242

    1kB-ish JavaScript framework for building hypertext applications - hyperapp/hyperapp

    2017 · github.com · its alternatives →

13. 13
    Dollar and Cent – A functional tool belt for Swift▲55

    A functional tool-belt for Swift Language similar to Lo-Dash or Underscore.js in Javascript - ankurp/Dollar

    2014 · github.com · its alternatives →

14. 14
    Dak – a Lisp-like language that transpiles to JavaScript▲94

    Hi HN, author here. Happy to answer any questions. I had an itch to make a lisp like language that was a thin layer on top JavaScript. Something that could leverage the thriving ecosystem that exists around JavaScript. It's brittle, hot off the oven. Besides being a fan of parenthesis, I think macros fill in a gap that the JavaScript ecosystem today fills in with one-off compilers, bundler plugins and such. Macros can't do everything, but for example I think they have the potential to enable things like JSX, Solid and Svelte style libraries. Take the tour to get a feel for what it can do and…

    2023 · daklang.com · its alternatives →

15. 15
    Odyc.js▲179

    Build tiny narrative games in JS

    2025 · odyc.dev · its alternatives →

16. 16BP
    Build progressively enhanced reactive HTML apps using Go and Alpine.js▲127

    Fir leverages Golang’s standard library html/template package and a bit of alpinejs to allow building reactive UIs. You start with plain old html and use alpinejs to enhance it to bring no-page-reload interactivity to web apps. The Fir toolkit is designed for Go developers with moderate html/css & js skills who want to progressively build reactive web apps without mastering complex web frameworks. It includes a Go library and an Alpine.js plugin. How it works ? On receiving user-interactions the fir server re-renders html templates and sends it over the wire where the fir client…

    2023 · livefir.fly.dev · its alternatives →

17. 17EA
    Expounder – A small JavaScript library for more engaging tutorials▲134

    2016 · skorokithakis.github.io · its alternatives →

18. 18
    Frpjs – Functional reactive programming library for JavaScript▲36

    Functional Reactive Programming Library for JavaScript - santoshrajan/frpjs

    2016 · github.com · its alternatives →

19. 19
    Leporello.js – interactive functional programming IDE for JavaScript▲107

    Hi! Leporello.js is an interactive functional programming environment designed for pure functional subset of JavaScript. It executes code instantly as you type and displays results next to it. Leporello.js also features an omnipresent debugger. Just position your cursor on any line or select any expression, and immediately see its value. Leporello.js visualizes a dynamic call tree of your program. Thanks to the data immutability in functional programming, it allows you to navigate the call tree both forward and backward, offering a time-travel-like experience. Leporello.js offers the ability…

    2023 · leporello.tech · its alternatives →

20. 20
    Proof-of-concept Node.JS-like interface with iOS 7 JavaScriptCore▲30

    Node.js Interpreter for iOS 7. Contribute to node-app/Interpreter development by creating an account on GitHub.

    2013 · github.com · its alternatives →

21. 21
    ByteArray.js – A binary library for JavaScript▲36

    2018 · github.com · its alternatives →

22. 22
    Danfo.js▲109

    Open Source JavaScript library for manipulating data.

    2020 · github.com · its alternatives →

23. 23
    A JavaScript interpreter written in Ruby▲75

    A Javascript implementation in Ruby! Contribute to haileys/twostroke development by creating an account on GitHub.

    2012 · github.com · its alternatives →

24. 24
    Nothing.js – A chainable mock object which always returns itself▲89

    A chainable, callable mock object which always returns itself - slmgc/Nothing

    2018 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →