Alternatives and similar repositories for either:

Users that are interested in either are comparing it to the libraries listed below

• nvzqz / static-assertions
  Ensure correct assumptions about constants, types, and more in Rust
  ☆603Updated last year
• Lokathor / tinyvec
  Just, really the littlest Vec you could need. So smol.
  ☆666Updated 3 weeks ago
• mcarton / rust-derivative
  A set of alternative `derive` attributes for Rust
  ☆430Updated 8 months ago
• taiki-e / pin-project
  A crate for safe and ergonomic pin-projection.
  ☆631Updated this week
• tokio-rs / async-stream
  Asynchronous streams for Rust using async & await notation
  ☆656Updated 2 months ago
• rust-analyzer / smol_str
  ☆463Updated 3 months ago
• bluss / arrayvec
  A vector with a fixed capacity. (Rust)
  ☆791Updated 4 months ago
• serde-rs / bytes
  Wrapper types to enable optimized handling of &[u8] and Vec<u8>
  ☆330Updated this week
• nrc / derive-new
  derive simple constructor functions for Rust structs
  ☆541Updated 5 months ago
• jonasbb / serde_with
  This crate provides custom de/serialization helpers to use in combination with serde's `with`-annotation and with the improved `serde_as`…
  ☆702Updated this week
• withoutboats / heck
  oh heck, a case conversion library
  ☆518Updated 11 months ago
• dtolnay / trybuild
  Test harness for ui tests of compiler diagnostics
  ☆854Updated last week
• dtolnay / proc-macro2
  ☆792Updated this week
• dtolnay / ryu
  Fast floating point to string conversion
  ☆622Updated this week
• rust-lang / cfg-if
  A if/elif-like macro for Rust #[cfg] statements
  ☆579Updated 3 months ago
• mmastrac / rust-ctor
  Module initialization/global constructor functions for Rust
  ☆798Updated this week
• smol-rs / futures-lite
  Futures, streams, and async I/O combinators.
  ☆494Updated this week
• Kobzol / rust-delegate
  Rust method delegation with less boilerplate
  ☆455Updated last week
• vorner / signal-hook
  Rust library allowing to register multiple handlers for the same signal
  ☆750Updated 5 months ago
• servo / rust-fnv
  Fowler–Noll–Vo hash function
  ☆343Updated 11 months ago
• dtolnay / rustversion
  Conditional compilation according to rustc compiler version
  ☆346Updated this week
• bluss / scopeguard
  Rust crate for a convenient RAII scope guard.
  ☆492Updated last year
• rustyhorde / vergen
  Generate cargo instructions at compile time in build scripts for use with the env! or option_env! macros
  ☆402Updated 2 weeks ago
• pksunkara / cargo-workspaces
  A tool for managing cargo workspaces and their crates, inspired by lerna
  ☆504Updated 3 weeks ago
• taiki-e / cargo-hack
  Cargo subcommand to provide various options useful for testing and continuous integration.
  ☆677Updated last week
• smol-rs / event-listener
  Notify async tasks or threads
  ☆459Updated 3 weeks ago
• smol-rs / async-task
  Task abstraction for building executors
  ☆450Updated 3 weeks ago
• someguynamedjosh / ouroboros
  Easy self-referential struct generation for Rust.
  ☆571Updated last month
• rust-num / num-traits
  Numeric traits for generic mathematics in Rust
  ☆772Updated 6 months ago
• frondeus / test-case
  Rust procedural macro attribute for adding test cases easily
  ☆615Updated 9 months ago