ruby

ruby.wasm

Ruby2022–2026

ruby / ruby.wasm

ruby.wasm

ruby.wasm is a collection of WebAssembly ports of the CRuby.

Web Development

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5Distinct people

5Mentions

0Explicit recommenders

877GitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

ruby.wasm is a collection of WebAssembly ports of the CRuby.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 11:56:56 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year5 dated mentions

Observed mentions: 2022-04-07 23:39:50 UTC to 2026-01-09 08:34:56 UTC.

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	2	2
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	0	0
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	1	1
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	1	1
2026 (partial)	2026-01-01 00:00:00 UTC	2027-01-01 00:00:00 UTC	1	1

What Hacker News says

5 sources

shevy-java·Jan 9, 2026

I am kind of disappointed with regard to WebAssembly. There were several articles that promoted it heavily - aka the hype phase. And then ... nothing really materialized. If you look at, for instance, ruby WASM, https://github.com/ruby/ruby.wasm - there is virtually zero real documentation. Granted, this is a specific problem of ruby, and japanese devs not understanding english; but when you search for webassembly, contrast it to the numerous tutorials we have with regards to HTML, CSS, JavaScript. I get it, it is younger, it is harder than the other three tech stacks, but virtually nothing really improves here. It is like a borne-dead technology that has only a tiny niche, e. g. Rust developers. That's about it. And I fear this is also not going to change anymore. After a while, if the hype fails to deliver, people will lose interest - a

Read the rest

nd a technology will eventually subside. That also happened to e. g. XHTML and the heavy use of XML in general in, say, 2000. I also don't think WebAssembly can be brought back now that the hype stage went off.

In What happened to WebAssembly

Lio·Jun 30, 2025

I'd not heard of Virgil before but Ruby itself can run on WASM: https://github.com/ruby/ruby.wasm (That's not strictly "designed for" as in the question but I thought it might be interesting all the same).

In Ask HN: Languages Designed for WASM?

sitkack·Aug 16, 2024

Arguably, VB6 and Ruby have a pretty similar syntax. And Wasm is first class in the Ruby build farm. https://github.com/ruby/ruby.wasm

In PyScript: An open source platform for Python in the browser

exikyut·May 4, 2022

Alternative idea: keep running the same Ruby code. - https://github.com/ruby/ruby.wasm (compile Ruby to WASM) - https://mame.github.io/emruby/ (example of Ruby compiled to WASM) - https://opalrb.com/ (compile a subset of Ruby to JS) This requires downloading several MB of code (and then caching it in-browser) so would be ideal for internal-only stuff.

In Microsoft 3D Movie Maker Source Code

eatonphil·Apr 7, 2022

Found it myself [0]! :) I think. <html> <script src="https://cdn.jsdelivr.net/npm/ruby-head-wasm-wasi@latest/dist/browser.umd.js"></script> <script> const { DefaultRubyVM } = window["ruby-wasm-wasi"]; const main = async () => { // Fetch and instntiate WebAssembly binary const response = await fetch( "https://cdn.jsdelivr.net/npm/ruby-head-wasm-wasi@latest/dist/ruby.wasm" ); const buffer = await response.arrayBuffer(); const module = await WebAssembly.compile(buffer); const { vm } = await DefaultRubyVM(module); vm.printVersion(); vm.eval(` require "js" luckiness = ["Lucky", "Unlucky"].sample JS::eval("document.body.innerText = '#{luckiness}'") `); }; main(); </script> <body></body> </

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html> [0] https://github.com/ruby/ruby.wasm/tree/main/packages/npm-pac...

In Ruby 3.2 preview 1 with support for WASM compilation