Grails

vs

Fiber

A framework designed to make it easy to build web applications with Java & Scala.  The Play Framework is is based on a lightweight, stateless, web-friendly architecture that follows a model-view-controller (MVC) pattern. While providing predictable and minimal resource consumption (CPU, memory, threads) suitable for highly-scalable applications.  Play is written in Scala and can be used for all programming languages that can be compiled into JVM bytecode.

Django is a high-level Python web development framework used for building web application at scale with speed. The framework adhere to a clean and pragmatic design that lets developers develop rapidly. Django ships as a "batteries included" framework and contains many of the features needed for most web applications such as an admin panel, an ORM and templating language. It takes much of the hassle out of web development and lets developers focus on writing their application instead of focusing on authentication, authorization and security.

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Express.js is a free and open-source web application framework for Node.js, released as free and open-source software under the MIT License. Express is designed for building fast web applications and APIs. In the Node.js community the Express framework is seen as the defacto standard when it comes to building such applications. The philosophy of the framework is to provide a small and robust toolset for building HTTP servers with JavaScript and Node.js. Express does not force you to use any specific database, ORM or templating language, as it leaves that up to you as a developer, to maximize freedom and choice. Express.js is used by companies and hobby developers alike to build single page JavaScript applications, websites, hybrids and public HTTP APIs.

Django is a high-level Python web development framework used for building web application at scale with speed. The framework adhere to a clean and pragmatic design that lets developers develop rapidly. Django ships as a "batteries included" framework and contains many of the features needed for most web applications such as an admin panel, an ORM and templating language. It takes much of the hassle out of web development and lets developers focus on writing their application instead of focusing on authentication, authorization and security.