HTML5
5th major revision of the core language of the World Wide Web
21 Alternatives To HTML5
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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
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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.
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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
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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
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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.
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Typescript
TypeScript allows developers to compile a superset of JavaScript to plain JavaScript on any browser, host, or operating system.