This plugin exports prototype flows (artboards you link together) to HTML, which you can then host using any web host (such as Firebase Hosting) and share with users, design stakeholders, etc.
You can install the plugin with Sketch Runner.
Alternatively, just download the latest release and double-click the .sketchplugin file to install.
This plugin was created using skpm. For a detailed explanation on how things work, checkout the skpm Readme.