This license applies to all parts of Node that are not externally maintained libraries. The externally maintained libraries used by Node are: - v8, located under deps/v8, which is copyrighted by the Google, Inc. v8 has a BSD license. - libev, located under deps/libev, and libeio, located at deps/libeio. This code is copyrighted by Marc Alexander Lehmann. Both are dually licensed under MIT and GPL2. - WAF build system, located at tools/waf. Copyrighted Thomas Nagy. Released under an MIT license. - The SCONS build system, located at tools/scons. Copyrighted by the SCONS Foundation. Released under an MIT license. - C-Ares, an asynchronous DNS client, located at deps/c-ares. Copyright by the Massachusetts Institute of Technology; authored by Greg Hudson, Daniel Stenberg and others. Released under an MIT license. - Node, optionally, dynmaically links to OpenSSL, cryptographic software written by Eric Young (eay@cryptsoft.com) to provide SSL/TLS encryption. OpenSSL is copyrighted by The OpenSSL Project. OpenSSL has a simple Apache-style license. OpenSSL is not included in the Node distribution. See http://openssl.org/ for more information. - HTTP Parser, located at deps/http_parser, is a small C library copyrighted by Ryan Lienhart Dahl and has a MIT license. - src/platform_darwin_proctitle.cc, has code taken from the Chromium project copyright Google Inc. and released with the BSD license. Node's license follows: Copyright 2009, 2010 Ryan Lienhart Dahl. All rights reserved. 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.