Trusted Maintainers

The Rust ecosystem is built by thousands of contributors, but certain individuals and organizations have established exceptional reputations for creating and maintaining high-quality, widely-trusted libraries.

For new Rustaceans, understanding who maintains the crates you depend on can help you make informed decisions about which libraries to use in your projects.

David Tolnay

GitHub: dtolnay

Prolific Rust library author and maintainer. Core contributor to the Rust compiler and tooling.

Notable crates:

• serde — The standard serialization framework
• syn — Parser for Rust source code, essential for proc macros
• quote — Code generation for proc macros
• thiserror — Derive macro for error types
• anyhow — Flexible error handling for applications
• proc-macro2 — Wrapper around proc_macro for better ergonomics

Andrew Gallant (BurntSushi)

GitHub: BurntSushi

Creator of ripgrep and author of numerous widely-used libraries.

Notable crates:

• regex — Fast, Unicode-aware regular expressions
• walkdir — Recursive directory traversal
• jiff — Modern date and time library
• csv — Fast CSV parser

Alex Crichton

GitHub: alexcrichton

Former Rust core team member and prolific contributor to foundational crates.

Notable crates:

• toml — TOML parser
• wasm-bindgen — Facilitating WebAssembly and JavaScript interop
• Many foundational async and FFI crates in the ecosystem

Sean McArthur

GitHub: seanmonstar

Creator and maintainer of core HTTP ecosystem libraries. Member of the Tokio team.

Notable crates:

• hyper — Low-level HTTP library
• reqwest — High-level HTTP client
• tower — Service abstractions for building robust clients and servers

Ulrik Sverdrup (bluss)

GitHub: bluss

Author and maintainer of itertools and other iterator-focused utility crates.

Notable crates:

• itertools — Extra iterator adaptors and methods

Servo Project

GitHub: servo

The Servo browser engine project, maintaining web-platform crates.

Notable crates:

• url — URL parser
• Many other web platform implementation crates

Aleksey Kladov

GitHub: matklad

Creator of rust-analyzer. Former Rust core team member.

Notable crates:

• xshell — Ergonomic shell scripting in Rust

The Rust Project

GitHub: rust-lang

The official Rust project organization.

Maintains the Rust compiler, standard library, and core tooling:

• rustc — The Rust compiler
• cargo — Rust's package manager and build system
• rustup — Rust toolchain installer
• rustfmt — Code formatter
• clippy — Linting tool
• futures — Fundamental async primitives

Tokio Project

GitHub: tokio-rs

Organization maintaining much of the async runtime ecosystem.

Notable crates:

• tokio — Async runtime for writing reliable network applications
• axum — Web application framework
• tower — Library of modular and reusable components for networking
• bytes — Utilities for working with bytes

RustCrypto

GitHub: RustCrypto

Organization maintaining pure Rust implementations of cryptographic algorithms and protocols.

Notable crates:

• sha2 — SHA-2 hash functions
• Many other cryptographic primitives following uniform APIs

RustSec

GitHub: rustsec

Organization maintaining the Rust security advisory database and related security tooling.

Notable projects:

• cargo-audit — Audits Cargo.lock for crates with security vulnerabilities
• Rust Security Advisory Database