HTML5
5th major revision of the core language of the World Wide Web
21 Alternatives To HTML5
Bootstrap
Simple and flexible HTML, CSS, and JS for popular UI components and interactions
C
One of the most widely used programming languages of all time
Clojure
Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.
CoffeeScript
Unfancy JavaScript
Elixir
Dynamic, functional language designed for building scalable and maintainable applications
Erlang
A programming language used to build massively scalable soft real-time systems with requirements on high availability
Flash
Power. Safety. Security. Intelligence.
HTML5 Boilerplate
A rock-solid default for HTML5 awesome.
Haskell
An advanced purely-functional programming language
Java
A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
JavaScript
Lightweight, interpreted, object-oriented language with first-class functions
Markdown by DaringFireball
Text-to-HTML conversion tool/syntax for web writers, by John Gruber
Objective-C
The primary programming language you use when writing software for OS X and iOS
PHP
A popular general-purpose scripting language that is especially suited to web development
Perl
Highly capable, feature-rich programming language with over 26 years of development
Purecss
A set of small, responsive CSS modules that you can use in every web project.
Python
Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Ruby
A dynamic, interpreted, open source programming language with a focus on simplicity and productivity
Scala Lang
Scala is a pure-bred object-oriented language that runs on the JVM
Swift
Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. for iOS, macOS, watchOS, tvOS, Linux and z/OS.
Typescript
TypeScript allows developers to compile a superset of JavaScript to plain JavaScript on any browser, host, or operating system.