# celluloid/celluloid

Actor-based concurrent object framework for Ruby

Repository: https://github.com/celluloid/celluloid
Canonical: https://ross.abutalabs.com/products/celluloid
Language: Ruby
License: MIT
License Family: permissive
Last push: 2024-03-07T20:00:57+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5634, "days_push": 909, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3870, forks 270 (observed 2026-08-28T04:08:27.760499+00:00)

## What it is
Celluloid is a Ruby framework for building asynchronous, multithreaded programs using the actor model with object-oriented concepts. It lets Ruby objects run concurrently as actors with transparent asynchronous and futures-based messaging.

## Use cases
- build concurrent Ruby programs with the actor model
- run Ruby objects in background threads with async calls
- replace manual thread management with actor supervision
- implement futures and promises in Ruby
- write multithreaded network services in Ruby

## When to choose
- you want actor-style concurrency in Ruby without managing threads manually
- you need supervised, fault-tolerant concurrent objects in an existing Ruby codebase

## When to avoid
- you need a actively maintained library with strong community support
- you are starting a new project where modern alternatives like async or concurrent-ruby may fit better
- you need distributed actors across processes or machines

## Facets
- artifact type: framework
- maturity: maintenance
- function: concurrency, middleware
- domain: developer-tools, backend, microservices
- platform: ruby
- tags: actor-model, concurrent-objects, multithreading, ruby-gem

## Member repositories
- celluloid/celluloid (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:27.760499+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 2026-08-29T18:25:48.626460+00:00, confidence not recorded.
  - readme: https://github.com/celluloid/celluloid (fetched 2026-08-28T04:08:27.760499+00:00, sha 6718fb84a077)
- Data as of 2026-08-30T08:39:29.467469+00:00.