I attended an Acquia webinar last week on Drupal Commons. There will be a recording of it here shortly (look for November 11 2010). Drupal Commons is a pre packaged Drupal 6 (D6) distribution by Acquia. It includes an install profile, a patched D6 core, a set of community sourced modules, some Acquia modules and a Drupal Commons core (glue) module. Drupal Commons goal is to provide an out of the box community building solution based on Drupal. It requires a lot of memory (128MB to PHP minimum) and runs heavy. A D7 release is on the cards but has no release date - too many modules require D7 ports at this stage. Here are a list of modules broken down into feature sets: Content / Collaboration

• OG (organic groups)
• Shoutbox
• Tagadelic
• Drupal Wiki
• Freelinking
• Profiles (core)
• CCK (content types)
• Discussions
• + 10 more

Users

• Profiles (core)
• Relationships (friending)
• Heartbeat
• Userpoints (reputation) but not Badges (though that's possible)

Personalisation

• Flags (bookmarks)
• Panels + Context (custom layout per path)
• Apache SOLR (filters for search)
• Acquia Search (from Acquia Network Subscription - a pay service - for faceted results and content recommendation)

Management

• Quant + Charting
• Featured

General

• Admin menu
• CTools
• Calendar, Date and Time
• Flags
• Messaging + Notifications
• Strongarm (configuration in code)
• Token
• Skinr (theming)
• Rules
• Vertical Tabs (theming)
• jQuery UI (theming)

Features not in Commons but requested (contribute to http://commons.acquia.com/ to add your vote)

• Projects
• Subgroups
• per group layout
• per group content types
• Homebox (user level dashboard)
• community tagging
• popular content block
• private messaging
• document management

Acquia offer Commons open and as a managed service, as an implementation service and with their network subscription.