We believe strongly in the open source software movement. All of the software we use is licensed under some type of open source license, with many licensed under Open Source Initiative's (OSI) approved licenses. If you're not familiar with what "open source" means, visit the OSI website and read The Open Source Definition. More important than software licenses, however, are the values of freedom promoted by the Free Software Foundation (FSF), who maintain The Free Software Definition. Nearly all open source software is free software, but the definitions are different. Regardless of what you call free software, the ideas and values of freedom have contributed significantly towards making these software projects what they are today.
Drupal is an open source content management system (CMS). Its modular design gives an extreme amount of flexibility in customizing a web site. Along with the core Drupal CMS framework comes thousands of contributed modules created by a thriving user community. This community consists of graphic designers, programmers, linguists, themers and normal people from all over the world. Drupal is being used everywhere, from small personal sites all the way up to big businesses, governments, and universities. Drupal is licensed under the GNU General Public License, version 2 or later.
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PostgreSQL is a mature and powerful database system, being actively developed for more than 15 years, and is touted as "The world's most advanced open source database". PostgreSQL has earned a reputation for reliability and data integrity, and for this reason is the primary choice for all new projects. PostgreSQL runs on all major operating systems and is available under The PostgreSQL Licence.
PHP is a general-purpose scripting language that is commonly used to produce dynamic web sites, similar to how Active Server Pages (ASP) and JavaServer Pages (JSP) are used. PHP is in very widespread use and powers some of the worlds largest internet sites. PHP runs as a standalone interpreter on most platforms, and is also available as an Apache module, among other web servers. PHP is now distributed under the PHP License, although some files have been contributed under other (compatible) licenses.
Apache HTTP Server is a web server developed by the Apache Software Foundation and the associated community of developers, and is often referred to simply as Apache. Apache is available for a wide variety of operating systems, and is distributed under the Apache License, Version 2.0.
GNU/Linux is a free computer operating system and kernel. Shortening it to “Linux” is actually a misnomer, as Linux is only the kernel. The GNU Project started in 1984 and is a large part of the operating system as a whole. GNU software is available under the GNU General Public License (GPL), or licenses that are compatible with the GPL. Linux was started in 1991 and became free in 1992 when it was relicensed under the GPL. GNU/Linux is used both for desktop computing and as a server operating system. It has even taken over as the primary operating systems used on supercomputers.
The OSI logo trademark is the trademark of Open Source Initiative. Apache and the Apache feather logo are trademarks of The Apache Software Foundation. Linux is a trademark of Linus Torvalds. All other names and trademarks are the property of their respective owners. No sponsorship, endorsement or association is claimed or implied.