Ractor – a Rust-based actor framework with clusters and supervisors
SOME HIGHLIGHTS. * We have a full supervision tree so actors can monitor other actors for exits and unhandled panic!s (at least the ones that can be caught) * The actor lifecycle is handled for you in a simple single-threaded, message handler primitive * You have a mutable state with each message handling call, so you have an easy way to create stateful actors and update that state as messages are processed * Actors talk to other actors by message passing, but there are remote-procedure-calls (RPCs) so actors can "ask a question" to another actor and wait on the reply. * A lot of the…
Ractor – a Rust-based actor framework with clusters and supervisors launched on February 16, 2023 with 168 votes, #213 of 3,829 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Ractor is a Rust-based framework for building actor systems with built-in supervision trees, message passing, and remote procedure calls. It is designed for developers building concurrent and distributed applications. The framework handles actor lifecycles automatically, maintains mutable state within actors, enables inter-actor communication through messages and RPCs, and provides factory primitives for distributed processing pools. It includes early support for clustering and manages concurrency concerns like graceful and forceful termination.
written from the facts on this page · September 2026
From the sources
Rust actor framework. Contribute to slawlor/ractor development by creating an account on GitHub.
In the maker’s words, at launch
SOME HIGHLIGHTS. * We have a full supervision tree so actors can monitor other actors for exits and unhandled panic!s (at least the ones that can be caught) * The actor lifecycle is handled for you in a simple single-threaded, message handler primitive * You have a mutable state with each message handling call, so…
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Source: Show HN post ↗ · launch text quoted in part
