A few good web frameworks?

Let’s now move on, and discuss a few specific server-side web frameworks.

The server-side frameworks below represent a few of the most popular available at time of writing. All of them have everything you need to be productive — they are open source, are under active development, have enthusiastic communities creating documentation and helping users on discussion boards, and are used in large numbers of high-profile websites. There are many other great server-side frameworks that you can discover using a basic internet search.

Note: Descriptions come (partially) from the framework websites!

Django (Python)

Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. Built by experienced developers, it takes care of much of the hassle of web development, so you can focus on writing your app without needing to reinvent the wheel. It’s free and open source.

Django follows the “Batteries included” philosophy and provides almost everything most developers might want to do “out of the box”. Because everything is included, it all works together, follows consistent design principles, and has extensive and up-to-date documentation. It is also fast, secure, and very scalable. Being based on Python, Django code is easy to read and to maintain.

Popular sites using Django (from Django home page) include: Disqus, Instagram, Knight Foundation, MacArthur Foundation, Mozilla, National Geographic, Open Knowledge Foundation, Pinterest, Open Stack.

Flask (Python)

Flask is a microframework for Python.

While minimalist, Flask can create serious websites out of the box. It contains a development server and debugger, and includes support for Jinja2 templating, secure cookies, unit testing, and RESTful request dispatching. It has good documentation and an active community.

Flask has become extremely popular, particularly for developers who need to provide web services on small, resource-constrained systems (e.g. running a web server on a Raspberry PiDrone controllers, etc.)

Express (Node.js/JavaScript)

Express is a fast, unopinionated, flexible and minimalist web framework for Node.js(node is a browserless environment for running JavaScript). It provides a robust set of features for web and mobile applications and delivers useful HTTP utility methods and middleware.

Express is extremely popular, partially because it eases the migration of client-side JavaScript web programmers into server-side development, and partially because it is resource-efficient (the underlying node environment uses lightweight multitasking within a thread rather than spawning separate processes for every new web request).

Because Express is a minimalist web framework it does not incorporate every component that you might want to use (for example, database access and support for users and sessions are provided through independent libraries). There are many excellent independent components, but sometimes it can be hard to work out which is the best for a particular purpose!

Many popular server-side and full stack frameworks (comprising both server and client-side frameworks) are based on Express, including FeathersItemsAPIKeystoneJSKrakenLEAN-STACKLoopBackMEAN, and Sails.

A lot of high profile companies use Express, including: Uber, Accenture, IBM, etc. (a list is provided here).

Ruby on Rails (Ruby)

Rails (usually referred to as “Ruby on Rails”) is a web framework written for the Ruby programming language.

Rails follows a very similar design philosophy to Django. Like Django it provides standard mechanisms for routing URLs, accessing data from a database, generating HTML from templates and formatting data as JSON or XML. It similarly encourages the use of design patterns like DRY (“dont repeat yourself” — write code only once if at all possible), MVC (model-view-controller) and a number of others.

There are of course many differences due to specific design decisions and the nature of the languages.

Rails has been used for high profile sites, including: BasecampGitHub,ShopifyAirbnbTwitchSoundCloud,HuluZendeskSquareHighrise.


ASP.NET is an open source web framework developed by Microsoft for building modern web applications and services. With ASP.NET you can quickly create web sites based on HTML, CSS, and JavaScript, scale them for use by millions of users and easily add more complex capabilities like Web APIs, forms over data, or real time communications.

One of the differentiators for ASP.NET is that it is built on the Common Language Runtime (CLR), allowing programmers to write ASP.NET code using any supported .NET language (C#, Visual Basic, etc.). Like many Microsoft products it benefits from excellent tools (often free), an active developer community, and well-written documentation.

ASP.NET is used by Microsoft, Xbox.com, Stack Overflow, and many others.

Mojolicious (Perl)

Mojolicious is a next generation web framework for the Perl programming language.

Back in the early days of the web, many people learned Perl because of a wonderful Perl library called CGI. It was simple enough to get started without knowing much about the language and powerful enough to keep you going. Mojolicious implements this idea using bleeding edge technologies.

Some of the features provided by Mojolicious are: Real-time web framework, to easily grow single file prototypes into well-structured MVC web applications; RESTful routes, plugins, commands, Perl-ish templates, content negotiation, session management, form validation, testing framework, static file server, CGI/PSGI detection, first class Unicode support; Full stack HTTP and WebSocket client/server implementation with IPv6, TLS, SNI, IDNA, HTTP/SOCKS5 proxy, UNIX domain socket, Comet (long polling), keep-alive, connection pooling, timeout, cookie, multipart and gzip compression support; JSON and HTML/XML parsers and generators with CSS selector support; Very clean, portable and object-oriented pure-Perl API with no hidden magic; Fresh code based upon years of experience, free and open source.


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