Dev tools · alternatives · 2026

24 alternatives to CLJS Fiddle – ClojureScript

A private, browser-only ClojureScript playground powered by the self-hosted compiler.

CLJS Fiddle is a browser-based playground for writing and testing ClojureScript code. It runs entirely in the browser using a self-hosted compiler, meaning no server is required and all code execution happens locally.… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. CLJS Fiddle – ClojureScript launched in 2016; newer entries below may have overtaken it.

1. 1
   ClavaScript: a ClojureScript syntax to JavaScript compiler▲24

   Light-weight ClojureScript dialect. Contribute to squint-cljs/squint development by creating an account on GitHub.

   2022 · github.com · its alternatives →

2. 2CP
   Clojure parser and core library in JavaScript, live on CodeCombat▲57

   2014 · vickychijwani.github.io · its alternatives →

3. 3RC
   run ClojureScript expressions in script tags▲13

   2021 · borkdude.github.io · its alternatives →

4. 4
   ClojureScript REPL within Excel▲83

   Run a ClojureScript REPL within Microsoft Excel. Contribute to cfelde/cljs4excel development by creating an account on GitHub.

   2015 · github.com · its alternatives →

5. 5
   I made a CLI tool to create web extensions with no build configuration▲381

   Hello HN! I'm the creator and solo developer of Extension.js, a development tool for browser extensions with built-in support for TypeScript, WebAssembly, React, and modern JavaScript. Developers use it to spend less time configuring the compilation config or learning new frameworks and more time actually writing code. Most projects similar to Extension.js rely on some sort of abstraction or configuration to get started, making the initial development process slow given the extra learning curve and setup guidelines. By using Extension.js, adding the package to your npm scripts is all it…

   2024 · github.com · its alternatives →

6. 6HN
   Hacker News Clone – Clojure, GraphQL Learning Project▲179

   I have ported "The Fullstack Tutorial for GraphQL" series, https://www.howtographql.com/, from Javascript to Clojure/script. Blog post: https://promesante.github.io/2019/08/14/clojure_graphql_full... Source code GitHub repo: https://github.com/promesante/hn-clj-pedestal-re-frame Suggestions and corrections, more than welcome.

   2019 · its alternatives →

7. 7
   Small Clojure Interpreter▲143

   Configurable Clojure/Script interpreter suitable for scripting and Clojure DSLs - babashka/sci

   2019 · github.com · its alternatives →

8. 8
   Crust – A CLI framework for TypeScript and Bun▲95

   We've been building Crust (https://crustjs.com/), a TypeScript-first, Bun-native CLI framework with zero dependencies. It's been powering our core product internally for a while, and we're now open-sourcing it. The problem we kept running into: existing CLI frameworks in the JS ecosystem are either minimal arg parsers where you wire everything yourself, or heavyweight frameworks with large dependency trees and Node-era assumptions. We wanted something in between. What Crust does differently: - Full type inference from definitions — args and flags are inferred automatically. No…

   Mar 2026 · github.com · its alternatives →

9. 9IG
   Interactive guide to Tetris in ClojureScript▲157

   2014 · shaunlebron.com · its alternatives →

10. 10JS
    Joyride: script VSCode like Emacs but using Clojure▲211

    Together with PEZ (Peter Strömberg) I made a VSCode extension that allows you to script VSCode using Clojure (interpreted CLJS). The repo: https://github.com/BetterThanTomorrow/joyride Introductory video: https://www.youtube.com/watch?v=V1oTf-1EchU See examples directory: https://github.com/BetterThanTomorrow/joyride/tree/master/ex... See animated gifs and news on Twitter: https://twitter.com/hashtag/vsjoyride?src=hashtag_click&f=li...

    2022 · its alternatives →

11. 11MI
    My Interactive ClojureScript book▲134

    An interactive book introducing programming with ClojureScript

    2017 · langintro.com · its alternatives →

12. 12
    A Clojure game library▲93

    A Clojure game library. Contribute to oakes/play-clj development by creating an account on GitHub.

    2014 · github.com · its alternatives →

13. 13
    I made a Clojure-like language in Go, boots in 7ms▲292

    Let-go is a Clojure-like language (~90% compatible with JVM Clojure) written in pure Go. It ships as a ~10MB static binary and cold boots in ~7ms - that's about 50x faster than JVM and 3x faster than Babashka. It has decent throughput on algorithmic workloads - within ballpark of the GraalVM-backed sci. I started this project in 2021 as an elaborate practical joke: I wanted to have an excuse for writing Clojure while pretending to write Go. Jokes aside, it turned out to be pretty decent: it feels like real Clojure, it has an nREPL server (supported in Calva, CIDER, etc.), it's easily…

    May 2026 · github.com · its alternatives →

14. 14
    I built a self-hosted course platform in Clojure▲59

    Master Clojure through project-based courses, live workshops, and a thriving community of practitioners.

    Feb 2026 · clojure.stream · its alternatives →

15. 15
    DotNetFiddle – JsFiddle for .Net▲217

    Test your C# code online with .NET Fiddle code editor.

    2013 · dotnetfiddle.net · its alternatives →

16. 16
    js.spec, a JavaScript implementation of clojure.spec▲96

    clojure.spec for Javascript. Contribute to prayerslayer/js.spec development by creating an account on GitHub.

    2016 · github.com · its alternatives →

17. 17CP
    ClojureScript pixel game engine with Blender live-reloading▲285

    Hi HN! 2d spritesheets for game development are often distributed as a PNG image, sometimes with a separate JSON or XML metadata document describing the layout, including any animation sequences within the sheet. Sometimes there is no metadata document and you have to work it out and manually write custom code to chop up the spritesheet and reference the sprites you want. I think it would be good if it became standard practice to distribute spritesheet PNGs with the metadata inline inside a PNG "chunk" so the whole thing is self-contained. That way artists can just distribute one file, and…

    2019 · mccormick.cx · its alternatives →

18. 18TI
    Tetris Implemented in ClojureScript▲135

    2019 · djblue.github.io · its alternatives →

19. 19
    Open sourcing a data flow engine for Clojure/Script▲116

    2019 · domino-clj.github.io · its alternatives →

20. 20AP
    A playground for in-browser interpreters▲79

    2015 · fatiherikli.github.io · its alternatives →

21. 21CD
    Clojure DSL for pattern-matching, parsing and generic programming▲204

    2012 · scattered-thoughts.net · its alternatives →

22. 22
    Programming Google Flutter with Clojure▲159

    This proof-of-concept project combines: - Flutter, from Google; - ClojureDart, port of Clojure to Dart from Tensegritics; and - Matrix, a reactive framework from moi. So, yes, we can now program Flutter with a Lisp. Yay. Project includes dozens of working examples and a full implementation of the TodoMVC classic to help tire-kickers play around. Support installing freely available on the #matrix channel on the Clojurians Slack.

    2022 · github.com · its alternatives →

23. 23CJ
    Chardin.js, beautiful instructions for apps▲203

    2013 · heelhook.github.com · its alternatives →

24. 24CI
    Clojure in the Open – simple tasks from open-source projects▲81

    2014 · longstorm.org · 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 →