OpenACS. The Toolkit for Online Communities

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Recent Bug Fixes

  • Issues entered into the OpenACS bug tracker during last year: 19 (resolved 14)
  • Issues from bug tracker fixed during last year: 67
  • Issues from bug tracker fixed since last release: 368

What is OpenACS

OpenACS is a toolkit for building scalable, community-oriented web applications. OpenACS is the foundation for many products and websites, including the .LRN (pronounced "dot learn") e-learning platform.

OpenACS is open source and is available under the GNU General Public License.

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Version 5.9.1 (openacs-5.9.1.tgz)
Available Versions
Install documentation

Generic installer
Windows Installation

Once the core system is installed, you can install packages from the OpenACS Package Repository.


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

We are open to your contributions! If you have an idea, a new piece of documentation, or a patch, we want to hear about it!

A number of companies can help you with OpenACS:

Resources for Developers

Resources for developers:


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