crossbeam-rs/crossbeam

Health v2 · maintenance only

Adoption not part of the score

8558 stars · 573 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Crossbeam is a Rust library providing tools for concurrent programming, including lock-free data structures, MPMC channels, epoch-based garbage collection, and scoped thread spawning. It is widely used as a foundation for building task schedulers and parallel systems in Rust.

Use cases

• pass messages between threads with mpmc channels
• build a work-stealing task scheduler
• spawn threads that borrow stack variables
• implement lock-free queues in rust
• synchronize thread start and end with wait groups
• avoid false sharing with cache line padding

When to choose

• you need battle-tested concurrent data structures or channels in Rust
• you want scoped threads that can borrow local variables safely
• you are building a scheduler or parallel runtime needing work-stealing deques

When to avoid

• you only need simple async concurrency, where tokio or std futures may suffice
• you need distributed or cross-process communication rather than in-process threading
• you want a batteries-included async runtime rather than low-level synchronization primitives

Facets

library · maturity stable

concurrency developer-tools developer-tools performance rust cross-platform lock-free channels work-stealing epoch-gc synchronization threads no-std algorithms

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markdown · JSON · MCP: product_card(name="crossbeam-rs/crossbeam")