Open Atrium

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Open Atrium
OpenAtrium logo.jpg
Original author(s) Development Seed
Developer(s) Phase2 Technology
Initial release July 18, 2011 (2011-07-18) (1.0)[1]
Stable release

2.652  (March 28, 2022; 22 months ago (2022-03-28))

Preview release None [±]
Written in PHP
Operating system Cross-platform
Available in Multi-lingual
Type Project management software
License(s) GNU General Public License v2.0

Open Atrium is free web-based open-source project and collaboration management software with content management features and is most notably a Drupal distribution.

Product history

The Open Atrium project was started in 2009 by open-source product development and consultant company Development Seed. A series of alphas and betas were released in 2009 and 2010. On February 22, 2011 web application development company Phase2 Technology bought the rights to Open Atrium from Development Seed.[2] A stable 1.0 release finally arrived via the software's new owners on July 18, 2011.[1]


The features of Open Atrium include[3]:

  • blog
  • calendar
  • dashboard with widgets
  • a notebook for document management
  • ShoutBox messaging system
  • ticket tracking system

Hardware/software requirements

Server-side requirements for installing Open Atrium are similar to a Drupal installation:

  • PHP 5.2.x or greater
  • PHP GD extension
  • MySQL 5.0.41 or greater
  • Apache with mod_rewrite module for clean urls or Nginx, using clean urls with php-fpm

Consult the documentation for more information.

Videos, screenshots, and other media

  • Videos for Open Atrium can be found on Vimeo.
  • Screenshots of Open Atrium can be found on Softpedia.
  • A demo of Open Atrium can be found here, though you'll have to request a password.

Entities using Open Atrium

Further reading

External links


  1. 1.0 1.1 "Open Atrium - All releases". Phase2 Technology. Retrieved 26 December 2012. 
  2. "Open Source Acquisition: Phase2 Technology Purchases Open Atrium From Development Seed". Sys-Con Media. 22 February 2011. Retrieved 26 December 2012. 
  3. "Open Atrium - Core Features". Phase2 Technology. 14 September 2010. Retrieved 26 December 2012.