Hacker ApprovedDepartments

mruby

Ranked 4 of 4 Ruby implementations by recommenders

A lightweight Ruby implementation people use for scripting and for packaging their scripts as standalone executables. Caveats raised include thin documentation and awkward embedding.

A lightweight Ruby implementation people use for scripting and for packaging their scripts as standalone executables. Caveats raised include thin documentation and awkward embedding.

11 people gave an opinion

recommend it
8
criticize it
3
approval share
73%
Each figure is one person. RecommendsCriticizes

Recommended in 4 of 13 months

  1. November 2025: recommended
  2. December 2025: recommended
  3. January 2026: not recommended
  4. February 2026: recommended
  5. March 2026: not recommended
  6. April 2026: not recommended
  7. May 2026: recommended
  8. June 2026: not recommended
  9. July 2026: not recommended
  10. August 2026: not recommended
  11. September 2026: not recommended
  12. October 2026: not recommended
  13. November 2026: not recommended (month in progress)

Why it doesn’t carry the badge

  • 8 people recommend itNeeds 10 or more, not met.
  • 2.7 recommenders for every criticNeeds 2 to 1 or better, met.
  • Recommended in 4 of 13 monthsNeeds 4 or more, met.

The same three rules apply to every product, and the badge can’t be bought. How the badge works

What people say about it

The reasons people give, with the number of comments that give each one. Open a reason to read what they said.

Why people recommend it

Each mark is one comment

  • Ships apps as standalone executables

    “I've had fun converting my projects and scripts into standalone executable files.”

    Comment from 18 Nov 2025 in “Compiling Ruby to machine language”

    “The one thing I like the most about mruby is the way you can ship apps.”

    Comment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

    “This feature alone is a reason why I in some occasions use MRuby”

    Comment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

Other Ruby implementations people recommend

The three most recommended other Ruby implementations, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.

mruby compared with 3 alternatives
ProductRecommendCriticizeApprovalMonthsOwnedBadge
JRuby13287%9—Approved
Spinel Ruby compiler12860%2——
TruffleRuby10191%8—Approved
mrubyThis page8373%4——
See all 4 Ruby implementations, ranked

What people said

14 of the 16 comments that mention it, newest first. Each links to the original comment.

“xserver and mruby for instance also succumbed to claude.”

CriticizesComment from 28 Jun 2026 in “Enhancing X11 Application Security with LXC”

“It's quite frictionless if you don't use many Ruby gems”

RecommendsComment from 31 May 2026 in “Ruby inventor Matz working on native compiler with AI help”

“Mruby is great for scripting”

RecommendsComment from 10 May 2026 in “Making your own programming language is easier than you think (but also harder)”

“I don't think they have become a competitive options.”

MixedComment from 28 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“it uses Ruby’s own native-extension build system for compilation”

CriticizesComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“has a very active and friendly discord”

RecommendsComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“As-is, embedding mruby kind of sucks, which is a real shame.”

CriticizesComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“This feature alone is a reason why I in some occasions use MRuby”

RecommendsComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“The one thing I like the most about mruby is the way you can ship apps.”

RecommendsComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“The lack of documentation means that I'd just waste my time though.”

CriticizesComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“The primary users are C hackers.”

CriticizesComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“My gut feeling comparing the two is that mRuby is a better (or at least less “quirky”) language”

RecommendsComment from 27 Dec 2025 in “Mruby: Ruby for Embedded Systems”

“the two languages can be quite complimentary”

RecommendsComment from 18 Nov 2025 in “Ruby 4.0.0 Preview2”

“I've had fun converting my projects and scripts into standalone executable files.”

RecommendsComment from 18 Nov 2025 in “Compiling Ruby to machine language”

Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.