* [helena-project/tock](https://github.com/helena-project/tock) — A secure embedded operating system for Cortex-M based microcontrollers
* **System tools**
* [Aaronepower/tokei](https://github.com/Aaronepower/tokei) — counts the lines of code [<img src="https://img.shields.io/travis/Aaronepower/tokei.svg">](https://travis-ci.org/Aaronepower/tokei)
* [buster/rrun](https://github.com/buster/rrun) — a command launcher for Linux, similar to gmrun [<img src="https://api.travis-ci.org/buster/rrun.svg?branch=master">](https://travis-ci.org/buster/rrun)