PHP-MVC vs Zen Rails Base Application: What are the differences?

Developers describe PHP-MVC as "Simple and easy to understand MVC skeleton application". This project is - by intention - NOT a full framework, it's a bare-bone structure, written in purely native PHP ! The php-mvc skeleton tries to be the extremely slimmed down opposite of big frameworks like Zend2, Symfony or Laravel. On the other hand, Zen Rails Base Application is detailed as "Base Rails 5.1 application with pre-configured tools and features". Base or "skeleton" application for Ruby on Rails 5.1 projects. Built to minimize the time spent writing boilerplate code and performing repetitive setup tasks.

PHP-MVC and Zen Rails Base Application can be categorized as "Frameworks (Full Stack)" tools.

PHP-MVC and Zen Rails Base Application are both open source tools. It seems that PHP-MVC with 1.25K GitHub stars and 494 forks on GitHub has more adoption than Zen Rails Base Application with 608 GitHub stars and 98 GitHub forks.