What are some alternatives?
When comparing MiddleMan and Grunt, you can also consider the following products
GatsbyJS - Blazing-fast static site generator for React
Wintersmith - Flexible, minimalistic, multi-platform static site generator built on top of node.js
Brunch - Brunch builds, lints, compiles, concatenates and shrinks your HTML5 app in an ultra-simple way. No more Grunt / Gulp mess.
Assemble - The static site generator for Node.js, Grunt.js and Yeoman
Postman Collections - Biggest library of ready-made API collections for Postman