1. Ufmta smaller, faster and panic-free alternative to core::fmt
2. Panic NeverThis crate guarantees that your application is free of panicking branches
3. Rust CrossEverything you need to know about cross compiling Rust programs!
4. UtestUnit `#[test]`ing for microcontrollers and other `no_std` systems
6. TrustTravis CI and AppVeyor template to test your Rust crate on 5 architectures and publish binary releases of it for Linux, macOS and Windows
7. XargoThe sysroot manager that lets you build and customize `std`
9. Steed[INACTIVE] Rust's standard library, free of C dependencies, for Linux systems
13. ctyType aliases to C types like c_int for use with bindgen
14. cast.rsMachine scalar casting that meets your expectations
15. alignedA newtype with alignment of at least `A` bytes
16. stlogLightweight logging framework for resource constrained devices
17. ws2812bWS2812B LED ring controlled via a serial interface
19. stm32f30x-halImplementation of the `embedded-hal` traits for STM32F30x microcontrollers
20. vcellJust like `Cell` but with volatile read / write operations
23. mfrc522A platform agnostic driver to interface the MFRC522 (RFID reader/writer)