Too Long; Didn't Read
tl;dr: <a href="https://github.com/Schniz/fnm" target="_blank">fnm</a> is a very fast <a href="https://hackernoon.com/tagged/node.js" target="_blank">Node.js</a> version manager, ~40x faster than NVM. It supports <code class="markup--code markup--p-code">.nvmrc</code> files and <a href="https://fishshell.com/" target="_blank">Fish shell</a> out of the box. It works on Linux and Mac and distributed as a single executable - and it is <a href="https://github.com/Schniz/fnm" target="_blank">open source on GitHub</a>!