The miniature, embeddable R7RS Scheme implementation

The bare essentials of std::io for use in no_std. Alloc support is optional.

Rust serialize/deserialize/access reflection for trees (no_std, no alloc)

noshell, a no_std argument parser and a shell for constrained systems.

fxjson — high-performance JSON parser for Go.

A powerful validation and transformation library.

Allows joining paths without allocation

grift is a no_std no_alloc no_unsafe lisp for bare-metal devices

Lightweight microcontroller API code generator with support for rich data types (including unsized types in no_std) and seamless backward/forward compatibility.

A working demo of Rust on bare-metal Sega Genesis hardware, using nothing but (a lot of) Nightly Rust!

A no-std trait with functions to determine the lengths of integers in various number bases.

Versatile Random Distributions (VRD) — fast, no_std-friendly Rust RNG. Xoshiro256++ default + optional Mersenne Twister (MT19937). Unbiased bounded sampling (Lemire), bit-precise floats, statistical distributions, Cortex-M validated. rand 0.10 traits.

Array- and slice-backed double-ended queues in 100% safe Rust

A minimal, no-std modern Jalali (Persian/Iranian/Shamsi) calendar for developers with diverse language support (Rust, JS/TS/WASM, C/C++, Python, and more)

A fixed-storage JSON parser written in Rust

A rust library implementing easy error handling for embedded devices with very little memory overhead.

Pure Rust PQC Kyber L5 + Dilithium L3 + AES-256-GCM + no_std + no_alloc + std + alloc

A minimal library for implementing device drivers on resource-constrained targets

constexpr header-only ratio library

compile-time dimension conversion and checking + support fractional dimension