Fast, unopinionated, minimalist web framework for node.

var express = require('express');
var app = express();

app.get('/', function(req, res){
  res.send('Hello World');
});

app.listen(3000);

Installation

$ npm install -g express

To install the 3.0 alpha:

$ npm install -g [email protected]

Quick Start

The quickest way to get started with express is to utilize the executable express(1) to generate an application as shown below:

Create the app:

$ npm install -g express
$ express /tmp/foo && cd /tmp/foo

Install dependencies:

$ npm install

Start the server:

$ node app

Features

• Built on Connect
• Robust routing
• HTTP helpers (redirection, caching, etc)
• View system supporting 14+ template engines
• Content negotiation
• Focus on high performance
• Environment based configuration
• Executable for generating applications quickly
• High test coverage

Philosophy

The Express philosophy is to provide small, robust tooling for HTTP servers. Making it a great solution for single page applications, web sites, hybrids, or public HTTP APIs.

Built on Connect you can use only what you need, and nothing more, applications can be as big or as small as you like, even a single file. Express does not force you to use any specific ORM or template engine. With support for over 14 template engines via Consolidate.js you can quickly craft your perfect framework.

More Information

• Join #express on freenode
• Google Group for discussion
• Follow tjholowaychuk on twitter for updates
• Visit the Wiki
• 日本語ドキュメンテーション by hideyukisaito
• Русскоязычная документация

Viewing Examples

Clone the Express repo, then install the dev dependencies to install all the example / test suite deps:

$ git clone git://github.com/visionmedia/express.git --depth 1
$ cd express
$ npm install

then run whichever tests you want:

$ node examples/content-negotiation

Running Tests

To run the test suite first invoke the following command within the repo, installing the development dependencies:

$ npm install

then run the tests:

$ make test

Contributors

project: express
commits: 3559
active : 468 days
files  : 237
authors: 
 1891	Tj Holowaychuk          53.1%
 1285	visionmedia             36.1%
  182	TJ Holowaychuk          5.1%
   54	Aaron Heckmann          1.5%
   34	csausdev                1.0%
   26	ciaranj                 0.7%
   21	Robert Sköld          0.6%
    6	Guillermo Rauch         0.2%
    3	Dav Glass               0.1%
    3	Nick Poulden            0.1%
    2	Randy Merrill           0.1%
    2	Benny Wong              0.1%
    2	Hunter Loftis           0.1%
    2	Jake Gordon             0.1%
    2	Brian McKinney          0.1%
    2	Roman Shtylman          0.1%
    2	Ben Weaver              0.1%
    2	Dave Hoover             0.1%
    2	Eivind Fjeldstad        0.1%
    2	Daniel Shaw             0.1%
    1	Matt Colyer             0.0%
    1	Pau Ramon               0.0%
    1	Pero Pejovic            0.0%
    1	Peter Rekdal Sunde      0.0%
    1	Raynos                  0.0%
    1	Teng Siong Ong          0.0%
    1	Viktor Kelemen          0.0%
    1	ctide                   0.0%
    1	8bitDesigner            0.0%
    1	isaacs                  0.0%
    1	mgutz                   0.0%
    1	pikeas                  0.0%
    1	shuwatto                0.0%
    1	tstrimple               0.0%
    1	ewoudj                  0.0%
    1	Adam Sanderson          0.0%
    1	Andrii Kostenko         0.0%
    1	Andy Hiew               0.0%
    1	Arpad Borsos            0.0%
    1	Ashwin Purohit          0.0%
    1	Benjen                  0.0%
    1	Darren Torpey           0.0%
    1	Greg Ritter             0.0%
    1	Gregory Ritter          0.0%
    1	James Herdman           0.0%
    1	Jim Snodgrass           0.0%
    1	Joe McCann              0.0%
    1	Jonathan Dumaine        0.0%
    1	Jonathan Palardy        0.0%
    1	Jonathan Zacsh          0.0%
    1	Justin Lilly            0.0%
    1	Ken Sato                0.0%
    1	Maciej Małecki         0.0%
    1	Masahiro Hayashi        0.0%

License

(The MIT License)

Copyright (c) 2009-2012 TJ Holowaychuk <[email protected]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.