Web systems

Content Management Systems and such groupware

See bits of Communication (to merge with) and Organisation

• http://en.wikipedia.org/wiki/Web_application_framework

• http://en.wikipedia.org/wiki/Management_information_systems

General

See Drupal

• http://silverstripe.org/

Blogging

See WordPress

• http://natewienert.com/codename-obtvse

• https://github.com/iamues/Simvla-Network

Forums

• https://www.phpbb.com/

• http://meta.discourse.org/

• http://www.debiki.com
  • http://www.debiki.com/-9qb49-solving-problem-first-comment-gets-all-upvotes#.UU5sDnEQ_p1
  • http://www.debiki.com/forum/-61859-forum-software-for-the-future#.UU5ta3EQ_p1

• http://pivory.com/

Blogging / comment services

• http://kinja.com/

Office

• https://www.socialtext.net/open/socialcalc

Knowledge management

• Substance is an open platform for collaborative composition and sharing of digital documents.

Project Management System (PMS)

• http://en.wikipedia.org/wiki/Project_management_system

• http://en.wikipedia.org/wiki/Comparison_of_notetaking_software

• http://www.project-open.net/

• http://evernote.com/

• http://projects.gnome.org/tomboy/features.html
• http://nevernote.sourceforge.net/
• https://code.google.com/p/fnotes/

• http://taskjuggler.org/
  • http://sysadvent.blogspot.co.uk/2012/12/day-8-scheduling-projects-with.html

• http://trac.edgewall.org/
  • http://en.wikipedia.org/wiki/Trac

• http://www.redmine.org/
  • http://en.wikipedia.org/wiki/Redmine

Customer Relationship Manager (CRM)

• http://drupal.org/project/civicrm

• http://drupal.org/project/crm_core

• https://github.com/csumb/drupalStudentCRM

• http://www.sugarcrm.com/community
  • http://www.sugarcrm.com/demos
  • http://drupal.org/project/sugarondrupal

• http://www.salesforce.com/
  • http://drupal.org/project/salesforce

• http://www.sugarforge.org/content/open-source/

• http://www.salsalabs.com/platform/
  • http://drupal.org/project/salsa

• http://www.citrusdb.org/

• http://www.opencrx.org/

• https://bitbucket.org/zurmo/zurmo

• https://www.vtiger.com/crm/open-source/

• http://www.netsuite.co.uk/portal/uk/home.shtml - scott

• http://www.streak.com/

ERP

• http://en.wikipedia.org/wiki/Enterprise_resource_planning

E-commerce

drupal commerce, ubercart, magento

• CASH Music is a nonprofit organization that builds open source tools for musicians.
  • https://github.com/cashmusic/platform

Images

• http://theopenphotoproject.org/

Communications

• http://www.bigbluebutton.org/

Digital media

• http://www.dspace.org/introducing
  • https://wiki.duraspace.org/display/DSPACE/Home

• http://fedora-commons.org/

Media

• http://xbmc.org/
  • https://github.com/kempniu/xbmcvc

Other

• http://www.redmine.org/

• http://www.magentocommerce.com/

• http://oscommerce.com/
  • https://github.com/osCommerce/oscommerce2
  • demo

• https://github.com/rigoneri/syte

• http://news.ycombinator.com/item?id=4857473

• http://camlistore.org/ - used by bradfitz

• http://getkirby.com/

• http://en.wikipedia.org/wiki/Apache_Cocoon

• http://owncloud.org/ - w/ webdav access

Static

• http://www.mickgardner.com/2012/12/an-introduction-to-static-site.html
• https://github.com/skx/static-site-generators

Dropbox-like

• http://lipsync.info/
  • https://github.com/philcryer/lipsync
  • http://fak3r.com/2009/09/14/howto-build-your-own-open-source-dropbox-clone/

• http://davehope.co.uk/Blog/backup-your-linux-vps-to-dropbox/