ync-ecosystem">
  <li>
    <a href="https://crates.io/crates/tokio">tokio</a> -
    An event-driven, non-blocking I/O platform for writing asynchronous applications.
    It has <code>async</code>/<code>await</code> support starting from 0.2.0-alpha.1
    <a href="https://github.com/tokio-rs/tokio/issues/1201">#1201</a>
  </li>
  <li>
    <a href="https://crates.io/crates/smol">smol</a> -
    A small, fast, modular async runtime. It provides all the interfaces you
    are used to, but in an async version and