About

OpenACS is an open-source toolkit for building scalable, community-oriented web applications.

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

OpenACS runs on AOLserver and NaviServer and uses either the Oracle (which is not open-source) or PostgreSQL relational databases.

Would you like to support the projects? There are several ways how to contribute.

Why use OpenACS?
A technical overview of OpenACS and why you would want to use it.
Screenshots
OpenACS and .LRN screenshots
OpenACS Release Status and OpenACS Todo List
stable and developmental versions.
Projects
Projects based on OpenACS
History of OpenACS
Licensing
OpenACS.org Web Site Credits
OpenACS Team
Community
OpenACS Governance
Members of the OpenACS Core Team (OCT)