Fossil SCM vs Hugo

While most other platforms allow either online blogging, or development offline and hosting on some other platform, fossil allows you to develop locally, host it locally, view it locally, and you can substitue locally with remote if you want to.
It's just one file. Fossil.

It is. It is also free as in libre, as in the license is similar (or equivilant) to BSD-2

Fossil doesn't depend on a specific language to be present on the target or development system. Just write, commit, and done.

Code can be viewed on GitHub.

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.

Create your new site, run the Hugo server, edit. Lather, rinse, repeat. Hugo stays out of the way.

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.

Can create PDFs, eBooks, RSS-Feeds, language and market specific Websites from single content folder.

Allows you to see changes in real time.