Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Flask is intended for getting started very quickly and was developed with best intentions in mind.
It is an open-source template language written in Ruby. It is the backbone of Shopify themes and is used to load dynamic content on storefronts. It is safe, customer facing template language for flexible web apps.
A human-readable data-serialization language. It is commonly used for configuration files, but could be used in many applications where data is being stored or transmitted.
Mustache is a logic-less template syntax. It can be used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a hash or object. We call it "logic-less" because there are no if statements, else clauses, or for loops. Instead there are only tags. Some tags are replaced with a value, some nothing, and others a series of values.