# slawlor/ractor

Rust actor framework

Repository: https://github.com/slawlor/ractor
Canonical: https://ross.abutalabs.com/products/ractor
Language: Rust
License: MIT
License Family: permissive
Last push: 2026-08-17T19:16:57+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 96, longevity 95
- inputs: {"age_days": 1338, "days_push": 16, "days_rel": 26, "gap_med": 5.0, "n_releases_24m": 43}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2099, forks 128 (observed 2026-08-28T04:06:13.470226+00:00)

## What it is
Ractor is a pure-Rust actor framework inspired by Erlang's gen_server, providing actor message processing, supervision trees, and lifecycle management. It supports tokio and async-std runtimes, with a companion ractor_cluster library for distributed, cluster-based deployments.

## Use cases
- build concurrent actor-based systems in Rust
- implement supervision trees for fault-tolerant services
- distribute actors across a cluster of nodes
- replace hand-rolled tokio message-passing with a structured actor model
- build Erlang-style gen_server patterns in Rust

## When to choose
- you want an Erlang-inspired actor model with Rust performance
- you need supervision and lifecycle management for concurrent tasks
- you plan to scale to a distributed cluster of actors

## When to avoid
- you need a simple thread pool rather than an actor model
- your project is not Rust-based
- you require a battle-tested framework with a very large ecosystem

## Facets
- artifact type: framework
- maturity: active
- function: concurrency, rpc, middleware
- domain: microservices, developer-tools, backend
- platform: rust, cross-platform
- tags: actor-model, erlang-inspired, supervision-trees, tokio, async-std, clustering

## Member repositories
- slawlor/ractor (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:13.470226+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 2026-08-30T02:54:26.903277+00:00, confidence not recorded.
  - readme: https://github.com/slawlor/ractor (fetched 2026-08-28T04:06:13.470226+00:00, sha 48b03ac0b7d0)
  - registry_crates: https://crates.io/api/v1/crates/ractor (fetched 2026-08-29T10:34:38.740234+00:00, sha cce3f4361c7b)
- Data as of 2026-08-30T08:39:29.467469+00:00.