npm (short for Node.js package manager ) is a package manager for the JavaScript programming language. It is the default package manager for the JavaScript runtime environment Node.js. It consists of a command line client, also called npm, and an online database of public and paid-for private packages, called the npm registry. The registry is accessed via the client, and the available packages can be browsed and searched via the npm website. The package manager and the registry are managed by npm, Inc. Read more...

Babel or Babel.js is a free and open-source JavaScript compiler and configurable transpiler used in web development. Babel allows software developers to write source code in a preferred programming language or markup language and have it translated by Babel into JavaScript, a language understood by modern web browsers.

Babel is popular tool for using the newest features of the JavaScript programming language. As a transpiler, or source-to-source compiler, developers can program using new ECMAScript 6 (ES6) language features by using Babel to convert their source code into versions of JavaScript that evolving browsers are able to process. The core version of Babel is downloaded 5 million times a month. Read more...

Google Web Toolkit (GWT /ˈɡwɪt/), or GWT Web Toolkit, is an open-source set of tools that allows web developers to create and maintain complex JavaScript front-end applications in Java. Other than a few native libraries, everything is Java source that can be built on any supported platform with the included GWT Ant build files. It is licensed under the Apache License version 2.0.

GWT emphasizes reusable approaches to common web development tasks, namely asynchronous remote procedure calls, history management, bookmarking, UI abstraction, internationalization, and cross-browser portability. Read more...

There are many JavaScript frameworks available. The intention of this comparison is to show some examples of notable JavaScript frameworks. Read more...

WebSharper is an open-source and commercial web-programming framework that allows web developers to create and maintain complex JavaScript and HTML5 front-end applications in the F# programming language. Other than a few native libraries, everything is F# source. Read more...

The following tables compare Document Object Model (DOM) compatibility and support for a number of JavaScript engines used in web browsers.

For features that are fully supported (based on DOM Level 2 or DOM Level 3 modules that are under W3C Recommendation), an exact version number is given if it is certain that the feature was added in such version. DOM Level 0 and DOM Level 3 modules that are still under development are not included. Read more...

Morfik Technology Pty Ltd. is an Australian software company that was acquired by Altium in 2010.

The company is known for developing a set of visual designers, compilers and a Framework combined in an Integrated development environment (IDE) aimed at developing Ajax applications in a high-level language such as Java, C#, BASIC or Object Pascal. Morfik includes visual design tools for Web interfaces, database structure, and queries. It supports the classic client–server model, however like all Ajax applications, the client-side code runs within a browser. The Morfik development tool converts the forms that the user draws into DHTML, compiles the client-logic into JavaScript, and builds the application and database server engines to house the server-side code. Read more...

Clojure (/ˈkloʊʒər/, like closure) is a modern, dynamic, and functional dialect of the Lisp programming language on the Java platform. Like other Lisps, Clojure treats code as data and has a Lisp macro system. The current development process is community-driven, overseen by Rich Hickey as its benevolent dictator for life (BDFL).

Clojure advocates immutability and immutable data structures and encourages programmers to be explicit about managing identity and its states. This focus on programming with immutable values and explicit progression-of-time constructs is intended to facilitate developing more robust programs, especially multithreaded ones. While its type system is entirely dynamic, recent efforts have also sought the implementation of gradual typing.
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Koding is a development environment automation platform owned by Koding, Inc. which allows software developers define their development environments in a definition file, called "stack script" this file then calls to various cloud providers to provision defined development environment. This file is visible to the entire team and can be updated by the administrators of the account. Environments that are provisioned by this file can be shared in a web browser without the needs of downloading the software development kits - developers are also able to download a command line tool called "kd" which allows them to mount provisioned VMs to their computers thus enabling development using developers' local IDEs. Since the platform is able to create linux VMs it supports multiple programming languages, including C, C++, Go, Java, Node.js, Perl, PHP, Python, and Ruby.
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Visual Studio Code is a source-code editor developed by Microsoft for Windows, Linux and macOS. It includes support for debugging, embedded Git control, syntax highlighting, intelligent code completion, snippets, and code refactoring. It is also customizable, so users can change the editor's theme, keyboard shortcuts, and preferences. The source code is free and open source and released under the permissive MIT License. The compiled binaries are freeware and free for private or commercial use.

Visual Studio Code is based on Electron, a framework which is used to deploy Node.js applications for the desktop running on the Blink layout engine. Although it uses the Electron framework, the software does not use Atom and instead employs the same editor component (codenamed "Monaco") used in Azure DevOps (formerly called Visual Studio Online and Visual Studio Team Services). Read more...

Komodo IDE is an integrated development environment (IDE) for dynamic programming languages. It was introduced in May 2000. Many of Komodo's features are derived from an embedded Python interpreter.

Komodo IDE uses the Mozilla and Scintilla code base as they share many features and support the same languages (including Python, Perl, PHP, Ruby, Tcl, SQL, Smarty, CSS, HTML and XML) and operating systems (Linux, OS X, and Windows). The editor component is implemented using the Netscape Plugin Application Programming Interface (NPAPI), with the Scintilla view embedded in the XML User Interface Language (XUL) interface in the same manner as a web browser plugin. Read more...

In computing, JavaScript Object Notation (JSON) (/ˈdʒeɪsən/ "jay-son", /dʒeɪˈsɒn/) is an open-standard file format that uses human-readable text to transmit data objects consisting of attribute–value pairs and array data types (or any other serializable value). It is a very common data format used for asynchronous browser–server communication, including as a replacement for XML in some AJAX-style systems.

JSON is a language-independent data format. It was derived from JavaScript, but many programming languages include code to generate and parse JSON-format data. The official Internet media type for JSON is application/json. JSON filenames use the extension .json. Read more...

WebAssembly (often shortened to Wasm) is a standard that defines a binary format and a corresponding assembly-like text format for executables used by web pages.

The purpose of Wasm is to enable the JavaScript engine of a web browser to execute page scripts nearly as fast as native machine code. But this is not a full replacement for JavaScript; rather, Wasm is only intended for performance-critical portions of page scripts. Wasm code runs in the same sandbox as regular script code, but only regular scripts have direct access to the DOM tree. Read more...

The Document Object Model (DOM) is a cross-platform and language-independent application programming interface that treats an HTML, XHTML, or XML document as a tree structure wherein each node is an object representing a part of the document. The DOM represents a document with a logical tree. Each branch of the tree ends in a node, and each node contains objects. DOM methods allow programmatic access to the tree; with them one can change the structure, style or content of a document. Nodes can have event handlers attached to them. Once an event is triggered, the event handlers get executed.

The principal standardization of DOM was handled by the World Wide Web Consortium, which last developed a recommendation in 2004. WHATWG took over development of the standard, publishing it as a living document. The W3C now publishes stable snapshots of the WHATWG standard. Read more...

CommonJS is a project with the goal to establish conventions on module ecosystem for JavaScript outside of the web browser. The primary reason of its creation was a major lack of commonly accepted form of JavaScript scripts module units which could be reusable in environments different from that provided by a conventional web browser e.g. web server or native desktop applications which run JavaScript scripts. Read more...

JetBrains PhpStorm is a commercial, cross-platform IDE (integrated development environment) for PHP built on JetBrains' IntelliJ IDEA platform.

PhpStorm provides an editor for PHP, HTML and JavaScript with on-the-fly code analysis, error prevention and automated refactorings for PHP and JavaScript code. PhpStorm's code completion supports PHP 5.3, 5.4, 5.5, 5.6, 7.0, 7.1, and 7.2 (modern and legacy projects), including generators, coroutines, the finally keyword, list in foreach, namespaces, closures, traits and short array syntax. It includes a full-fledged SQL editor with editable query results. Read more...

Active Server Pages (ASP), later known as Classic ASP or ASP Classic, is Microsoft's first server-side script engine for dynamically generated web pages.

ASP.NET, first released in January 2002, has superseded ASP. Read more...

Opera Dragonfly is a web development tool that was integrated into the Opera web browser from Opera versions 9.5 through 12.18, similar to Firebug and development tools built into Mozilla Firefox and Google Chrome.

It supports debugging JavaScript, viewing the DOM, monitoring network traffic, previewing resources, editing colors, etc. It also supports remote debugging, which allows using the features of Dragonfly to be used when debugging a mobile phone, TV, or another desktop computer. Read more...

An ECMAScript engine is a program that executes source code written in a version of the ECMAScript language standard, for example, JavaScript.

These are new generation ECMAScript engines for web browsers, all implementing just-in-time compilation (JIT) or variations of that idea. The performance benefits for just-in-time compilation make it much more suitable for web applications written in JavaScript. Read more...

Ajax (also AJAX /ˈeɪdʒæks/; short for asynchronous JavaScript and XML) is a set of web development techniques using many web technologies on the client side to create asynchronous web applications. With Ajax, web applications can send and retrieve data from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. By decoupling the data interchange layer from the presentation layer, Ajax allows web pages and, by extension, web applications, to change content dynamically without the need to reload the entire page. In practice, modern implementations commonly utilize JSON instead of XML.

Ajax is not a single technology, but rather a group of technologies. HTML and CSS can be used in combination to mark up and style information. The webpage can then be modified by JavaScript to dynamically display—and allow the user to interact with—the new information. The built-in XMLHttpRequest object within JavaScript is commonly used to execute Ajax on webpages allowing websites to load content onto the screen without refreshing the page. Ajax is not a new technology, or different language, just existing technologies used in new ways. Read more...

* Eclipse Platform is the core framework that all other Eclipse projects are built on.

• Java development tools (JDT) provides support for core Java SE. This includes a standalone fast incremental compiler.
• Plug-in Development Environment (PDE) provides tools to create, develop, test, debug, build and deploy Eclipse plug-ins, fragments, features, update sites and RCP products.
• Orion, CHE, Dirigible and Theia are browser-based IDEs and open tool integration platform which is entirely focused on developing for the web, in the web. Tools are written in JavaScript and run in the browser.

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Hypertext Markup Language (HTML) is the standard markup language for creating web pages and web applications. With Cascading Style Sheets (CSS) and JavaScript, it forms a triad of cornerstone technologies for the World Wide Web.

Web browsers receive HTML documents from a web server or from local storage and render the documents into multimedia web pages. HTML describes the structure of a web page semantically and originally included cues for the appearance of the document. Read more...