Crate

tokio-util

Utilities and adaptors extending the tokio async runtime.

What it is

tokio-util extends tokio with the Codec trait and Framed type for length-prefixed and line-delimited network protocols, stream utilities, task management primitives, and compatibility adaptors between tokio I/O and futures I/O traits.

Why it is commonly used

Used when building custom network protocols on top of tokio — implementing message framing, line-based protocols, or any codec that splits a raw byte stream into discrete application-level messages.

1.0k
Repositories
94%
Actively maintained
945
Updated ≤ 30 days
3.1M
Total stars
900
Owners

Counted from the Cargo.toml manifests of the 1.0k indexed repositories that declare tokio-util as a dependency — not download counts. Dependency data last verified 2026-08-13.

Browse 1014 repositories using tokio-util in Repos →
Often used with

Crates that show up unusually often in tokio-util projects. The most distinctive pairings rank first — crates these projects use far more than the average indexed Rust project does, not just crates that are popular everywhere. Each percentage is the share of tokio-util projects that also use it.

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