Metalsmith vs Punch: What are the differences?
Metalsmith: An extremely simple, pluggable static site generator. In Metalsmith, all of the logic is handled by plugins. You simply chain them together. Since everything is a plugin, the core library is actually just an abstraction for manipulating a directory of files; Punch: A simple, intuitive web publishing framework that will delight both designers and developers. Punch allows you to use boilerplates to quickly setup a site, write minimal templates with Mustache, and create flexible site structures with inheritable layouts and partials.
Metalsmith and Punch can be primarily classified as "Static Site Generators" tools.
Metalsmith and Punch are both open source tools. It seems that Metalsmith with 7.27K GitHub stars and 640 forks on GitHub has more adoption than Punch with 1.2K GitHub stars and 104 GitHub forks.