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De facto async runtime for Rust, providing I/O, timers, scheduling and networking primitives.
cargo add tokio
Package tokio, last 12 weeks.
tokio
Other tools in the same categories.
tokio-rs/axum
Ergonomic, modular web framework from the Tokio team built on Tower and hyper; the leading Rust choice.
actix/actix-web
Mature, extremely fast web framework with a large middleware ecosystem.
serde-rs/serde
Framework for serializing and deserializing Rust data structures efficiently and generically.
hyperium/hyper
Low-level, correct and fast HTTP/1 and HTTP/2 implementation used by most Rust HTTP stacks.
tower-rs/tower
Composable service and middleware abstractions (timeouts, retries, limits) shared by Axum and Tonic.
loco-rs/loco
Rails-inspired full-stack framework for Rust built on Axum and SeaORM, with generators and jobs.
rwf2/Rocket
Macro-driven web framework emphasizing type safety and ergonomics; slower release cadence lately.