- [managed](https://crates.io/crates/managed): provides `ManagedSlice`, `ManagedMap` backed by either their std counterparts or fixed-size buffers for `#![no_std]`. - ![crates.io](https://img.shields.io/crates/v/managed.svg)
- [smoltcp](https://github.com/m-labs/smoltcp): a small TCP/IP stack that runs without `alloc`