---
title: Ordered List
type: typography
---

1. Fast as C
2. Slick as Ruby
3. Crystal uses [green threads](/), called fibers, to achieve concurrency. Fibers communicate with each other using channels, as in Go or Clojure, without   having to turn to shared memory or locks.
4. Crystal libraries are packed as Shards, and distributed via Git without needing a centralised repository.

   Built in commands allow dependencies to be easily specified through a YAML file and fetched from their respective repositories.
5. ```text
   Crystal 1.3.0 (2022-01-06)

   LLVM: 13.0.0
   Default target: x86_64-unknown-linux-gnu
   ```
