Drupal distributions

Information on quick pre-configured Drupal installations, usually including a selection of modules.

At drupal.org:

• Installation profiles - Customized "distributions" that enable and configure a set of modules that work together for a specific kind of site.
• Distribution profiles - Drupal group.

Other resources:

• Acquia Drupal - A collection of essential Drupal software, packaged together to build dynamic community websites faster. Free Drupal with optional paid support. There is also a stack installer for test sites on PC, including Apache, MySQL and PHP.
• CiviCRM - Open source solution for the civic sector, to meet the needs of advocacy, non-profit and non-governmental groups.
• DrupalEd - A distribution designed for education sites that offer courseware, online lessons, etc.
• Lullabot's New Venture - It will be launching an easy-to-use Drupal platform for groups, individuals and businesses to create powerful dynamic social websites.
• Open Atrium - An intranet/extranet that allows teams to have their own conversations, weblogs, wiki pages, calendars, to-do lists, a shoutbox, and a dashboard to manage it all. Open source, from Development Seed.
• Pressflow - A derivative of Drupal core providing enhanced performance, scalability and data integrity for high traffic sites. Open source, from Four Kitchens.

Lists that might also facilitate an initial module selection:

• Drupal.org: Module browsing by usage. Browse and filter modules, ordered by reported usage.
• Drupal.org: Project usage overview - Modules can be ordered by reported usage -ascending or descending order- clicking on the dates.
• Drupal Modules: Most Downloaded - Download data from a Drupal site.