Search · Index

(Sketch for) OpenACS Home

OpenACS (Open Architecture Community System) is a toolkit for building scalable, community-oriented web applications. OpenACS is the foundation for many products and websites, including the .LRN e-learning platform. OpenACS is open source and is available under the GNU General Public License.

Why use OpenACS?

OpenACS is unique in the breadth of services it offers developers and administrators. Millions of dollars and decades of developer time have gone into the maturation of OpenACS.

You can read the technical reasons to use OpenACS.

How do I install OpenACS?

The installation documentation contains all the necessary steps to install OpenACS on a large variety of systems. There is also a Windows Installer and other packaged installations openacs-system-install. Also Check the installation requirements before installing. The current stable release is OpenACS 5.9.0 (cvs aliases).

How do I work with OpenACS?

You can start by reading the documentation, specifically tips on customizing, the developer's tutorial, and
the FAQs. There is a OpenACS Wiki and a list of packages that extend OpenACS.

For professional help, contact one of the OpenACS companies.

OpenACS Community

One of the strengths of the OpenACS project is the community surrounding it:


NewsSubscribe via RSS

OpenACS 5.9.0 final released

We are proud to announce the release of OpenACS 5.9.0.
This release contains many security and performance improvements as well as new functionality. The new release differs from OpenACS 5.8.1 in the following points:
  • PostgreSQL enhancements and cleanups to improve performance and maintainability of the basic data model
  • Greatly improved HTML validity and protection against XSS attacks.
  • Improved theming support to create responsive interfaces.
  • Various new functionalities to ease debugging and to improve performance.

Altogether, OpenACS 5.9.0 differs from OpenACS 5.8.1 in more than 100,000 modifications contributed by 4 committers. All packages of the release were tested with PostgreSQL 9.4.* and Tcl 8.5.*.

Many thanks to all who helped in this effort via direct contributions, bug-reports or testing!

Release Announcement, ChangeLog, Download

Published on Dec 01, 2015

Recent Posts





Previous Month May 2017
Sun Mon Tue Wed Thu Fri Sat
30 (3) 1 2 3 (1) 4 5 6
7 8 9 10 11 (1) 12 13
14 15 16 (1) 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31 1 2 3

Popular tags

17 , 5.9.0 , 5.9.1 , ad_form , ADP , ajax , aolserver , asynchronous , bgdelivery , bootstrap , bugtracker , CentOS , COMET , CSP , CSRF , cvs , debian , emacs , fedora , FreeBSD , hstore , includelets , install , installation , installers , install-ns , javascript , libthread , linux , monitoring
No registered users in community xowiki
in last 30 minutes