Crate

bytes

Zero-copy byte buffer manipulation for network programming.

What it is

bytes provides Bytes and BytesMut — reference-counted byte buffer types that support zero-copy slicing and cheap cloning. Bytes implements shared ownership over a contiguous memory region, so multiple consumers hold views into the same buffer without copying.

Why it is commonly used

Core to the Tokio networking stack. hyper, tonic, axum, and all network protocol implementations use bytes as the buffer type. Used wherever high-throughput byte manipulation is needed without repeated allocation.

1.3k

Repositories

91%

Actively maintained

1.2k

Updated ≤ 30 days

4.2M

Total stars

1.1k

Owners

Counted from the Cargo.toml manifests of the 1.3k indexed repositories that declare bytes as a dependency — not download counts. Dependency data last verified 2026-08-13.

Browse 1316 repositories using bytes in Repos →

Often used with

Crates that show up unusually often in bytes 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 bytes projects that also use it.

http-body11%http-body-util28%tokio-rustls22.1%hyper-util26.7%aws-config13.8%rcgen14.1%hyper31.5%socket217.8%moka11.2%rustls-pki-types10.3%rustls-pemfile13.1%pin-project11.3%pin-project-lite13.5%tracing-opentelemetry15.8%prost-types10.6%async-stream20.4%opentelemetry-otlp18.9%opentelemetry_sdk19.8%opentelemetry21.1%http41%tikv-jemallocator13.5%jsonwebtoken17.2%prometheus12.9%futures-core11%

Used by these organizations

Cloudflare Mozilla AWS Microsoft Google Oxide Computer Parity Technologies Deno Zed Industries Fly.io Turso PingCAP SurrealDB Embark Studios Buoyant Vercel The Rust Project Fuel Labs Astral Tauri OpenAI Warp Meilisearch Rerun FUTO Tokio Bytecode Alliance Nushell Qdrant Polars Quickwit Datadog Hyperium Embassy Actix Zellij PyO3 Yew Iced Leptos Wasmer Tracel AI libp2p RustCrypto Servo esp-rs Paradigm Matrix.org

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