Habu is described as 'is likely the simplest static blog generator you'll encounter, no bullshit'. There are more than 25 alternatives to Habu for a variety of platforms, including Self-Hosted solutions, Mac, Windows, Linux and Online / Web-based. The best alternative is Ghost. It's not free, so if you're looking for a free alternative, you could try Grav or Jekyll. Other great apps like Habu are Hugo (Free, Open Source), Gatsby (Freemium, Open Source), Pelican (Free, Open Source) and Hexo (Free, Open Source).
Grav is an easy to use, yet powerful, opensource CMS that requires no database. In a nutshell, installing Grav is a matter of unzipping the file. It is fast, has sophisticated caching, and a light footprint for optimal performance.
Jekyll is a simple, blog aware, static site generator. It takes a template directory (representing the raw form of a website), runs it through and Liquid converters, and spits out a complete, static website suitable for serving with Apache or your favorite web server.
Simplicity First Minimal setup with markdown-centered project structure helps you focus on writing. Vue-Powered Enjoy the dev experience of Vue + webpack, use Vue components in markdown, and develop custom themes with Vue.
Hakyll is a Haskell library for generating static sites, mostly aimed at small-to-medium sites and personal blogs. It is written in a very configurable way and uses an xmonad-like DSL for configuration.