# truffleruby/truffleruby

A high performance implementation of the Ruby programming language, built on GraalVM.

Repository: https://github.com/truffleruby/truffleruby
Canonical: https://ross.abutalabs.com/products/truffleruby
Homepage: https://truffleruby.dev
Language: Ruby
License: NOASSERTION
License Family: other
Topics: graalvm, ruby, truffle, hacktoberfest
Last push: 2026-08-26T19:12:33+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 69, longevity 100
- inputs: {"age_days": 3862, "days_push": 7, "days_rel": 129, "gap_med": 59.0, "n_releases_24m": 11}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3220, forks 211 (observed 2026-08-28T04:07:49.725626+00:00)

## What it is
TruffleRuby is a high-performance implementation of the Ruby programming language built on GraalVM's Truffle framework. It aims for full MRI compatibility while offering faster execution, parallel execution without a global interpreter lock, C extension support, and low-overhead interoperability with other languages.

## Use cases
- run ruby code faster
- parallel ruby threads without gvl
- use c extensions with a faster ruby
- interoperate ruby with java and javascript
- install an alternative ruby interpreter
- test ruby apps on graalvm in ci

## When to choose
- you need maximum Ruby performance for CPU-intensive workloads
- you want true parallel threading without the GVL
- you need Ruby interoperability with JVM or GraalVM languages
- you want thread-safe native extensions and data structures

## When to avoid
- you rely on gems or C extensions with known TruffleRuby incompatibilities
- you need the smallest possible runtime footprint
- your deployment targets only standard MRI behavior or tooling
- you need guaranteed identical behavior to CRuby edge cases

## Facets
- artifact type: cli-tool
- maturity: active
- function: interpreter, compiler, concurrency
- domain: programming-languages, compilers, performance, developer-tools
- platform: jvm, cli
- tags: ruby, graalvm, truffle, jvm-languages, language-implementation, c-extensions, no-gvl, linux, macos, docker

## Member repositories
- truffleruby/truffleruby (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:49.725626+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:12:50.356960+00:00, confidence not recorded.
  - readme: https://github.com/truffleruby/truffleruby (fetched 2026-08-28T04:07:49.725626+00:00, sha cf1cd2b51648)
  - homepage: https://truffleruby.dev (fetched 2026-08-29T09:37:55.114878+00:00, sha 36e4c1899f8b)
  - site_page: https://truffleruby.dev/about (fetched 2026-08-29T09:37:55.117448+00:00, sha 22e4ec35573d)
  - site_page: https://truffleruby.dev/blog/truffleruby-33-is-released (fetched 2026-08-29T09:37:55.118984+00:00, sha 74c771c4cda6)
- Data as of 2026-08-30T08:39:29.467469+00:00.