Editor plugins

Visual Studio Code

Front Matter: Once you go for a static site, you need to think about how you are going to manage your articles. Front matter is a tool that helps you maintain the metadata/front matter of your articles like: creation date, modified date, slug, tile, SEO check, and more.
Hugo Helper: Hugo Helper is a plugin for Visual Studio Code that has some useful commands for Hugo. The source code can be found here.
Hugo Language and Syntax Support: Hugo Language and Syntax Support is a Visual Studio Code plugin for Hugo syntax highlighting and snippets. The source code can be found here.
Hugo Themer: Hugo Themer is an extension to help you while developing themes. It allows you to easily navigate through your theme files.
Hugofy: Hugofy is a plugin for Visual Studio Code to “make life easier” when developing with Hugo. The source code can be found here.
Prettier Plugin for Go Templates: Format Hugo templates using this Prettier plugin. See installation instructions.
Syntax Highlighting for Hugo Shortcodes: This extension adds some syntax highlighting for Shortcodes, making visual identification of individual pieces easier.

emacs-easy-hugo: Emacs major mode for managing hugo blogs. Note that Hugo also supports Org-mode.
ox-hugo.el: Native Org-mode exporter that exports to Blackfriday Markdown with Hugo front-matter. ox-hugo supports two common Org blogging flows — exporting multiple Org subtrees in a single file to multiple Hugo posts, and exporting a single Org file to a single Hugo post. It also leverages the Org tag and property inheritance features. See Why ox-hugo? for more.

Hugofy: Hugofy is a plugin for Sublime Text 3 to make life easier to use Hugo static site generator.
Hugo Snippets: Hugo Snippets is a useful plugin for adding automatic snippets to Sublime Text 3.

Vim Hugo Helper: A small Vim plugin that facilitates authoring pages and blog posts with Hugo.
vim-hugo: A Vim plugin with syntax highlighting for templates and a few other features.