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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:

 

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OpenACS 5.9.1 final released

We are proud to announce the release of OpenACS 5.9.1.

This release contains many security and performance improvements and includes new functionalities. The release of OpenACS 5.9.1 contains the 88 packages of the oacs-5-9 branch. These packages include the OpenACS core packages, the major application packages (e.g. most the ones used on OpenACS.org), and DotLRN 2.9.1.

  • Refactoring of rich-text editor integration
  • Improved admin interface (e.g. theme manager), improved scalability for large sites
  • Improvements for "host-node mapped" subsites, acs-rels, status code handlers for AJAX, Internationalization, and documentation.

Altogether, OpenACS 5.9.1 differs from OpenACS 5.9.0 in about 312710 line insertions and 103273 deletions, contributed by 5 committers and 8 additional bug-fix submitters. All packages of the release were tested with PostgreSQL 9.6.* and Tcl 8.5.*.

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

Release Announcement, ChangeLog, Download core, Download full

Published on Aug 08, 2017

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

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