When comparing Hugo vs Gatsby JS, the Slant community recommends Hugo for most people. In the question“What are the best static site generators?” Hugo is ranked 2nd while Gatsby JS is ranked 9th. The most important reason people chose Hugo is:
Code can be viewed [on GitHub](http://github.com/spf13/hugo).
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open-source and free
Code can be viewed on GitHub.
Pro Fast
Pro No dependencies
All other SSGs expect you to have a full toolchain setup for their language. Hugo is written in Go and distributed as an executable for unix, linux, windows and mac. Just download and run.
Pro Clean workflow
Create your new site, run the Hugo server, edit. Lather, rinse, repeat. Hugo stays out of the way.

Pro Flexible
Pro Good documentation
Pro Many themes available
Pro Draft mode
Allows you to see changes in real time.
Pro Single binary - cross platform
Pro Single source publishing
Can create PDFs, eBooks, RSS-Feeds, language and market specific Websites from single content folder.
Pro Great multipurpose development platform
We are using Hugo as the base-framework for a full blown knowledge management system, idea-management and inhouse brainstorming tool. Hugo source-code is well structures and comes with top components out of the box, that makes every solution built on this framework incredible fast and scalable accross platforms and corporate silos! Hugo - when being used as a framework is a game-changer that puts Sharepoint, Wordpress and Co. back to the shelf.
Pro Very active community
Pro Easy to add new content types, data files, and taxonomies
Pro No page reload when navigating
Pro Based on React.js
Editing markup is phenomenally easy when you have components.
Pro Live reload
Every change you make can be almost immediately seen in a browser.
Pro A lot of plugins
Gatsby offers a lot of plugins to integrate tools like SASS, typescript, styled components, etc.
Pro Very active development
Gatsby is very actively developed and the maintainers are very helpful.
Pro Built-in code and data splitting
Pro Open Source
Pro Take content from any source
Gatsby can generate the pages with content from any sources like Drupal, Wordpress, Contentful, etc. If the source plugin is not coded for your solution, you can create it.
Pro A static site and a React app in one
The static pages are generated by Server Site Rendering of the React app. So you have all benefits of a static site, and all benefits of a React app, which is very powerful.
Pro GraphQL Data Layer
Pro A lot of examples
Gatsby have a lot of examples sites in his github repository.
Pro Beautiful out-of-the-box blog starters
Cons
Con No tutorial on how to create a theme from scratch
Con A bit raw
You'll maybe have to tweak some JSX if you want something that's not covered by available themes.
