tl;dr

Diecast is an all-in-one program that lets you build websites using conventional web programming tools (HTML, JavaScript, CSS/Sass) as well as a rich templating framework for handling complex tasks server-side. A key feature is the use of data bindings, which allows your templates to consume remote content (RESTful APIs, Redis, and more). This declarative approach eliminates many of the ambiguities that regularly appear in conventional MVC/server-side frameworks.

Introduction

Diecast is a web server that allows you to render a directory tree of template files into HTML, CSS or anything other text-based media in real-time. Data can be retrieved from remote sources during the template rendering process, creating dynamic web pages built by consuming APIs and remote files without the need to use client-side Javascript/AJAX calls or an intermediate server framework.

Documentation

You can read the complete Diecast manual at https://ghetzel.github.io/diecast.