This is an Open Source PHP CMS script for creating conference websites. It holds all the tools necessary in creating and managing a website that keeps track of scholastic or other types of conferences.

Features of Open Conference Systems:
- Create a conference website
- Compose and send a call for papers
- Electronically accept paper and abstract submissions
- Allow paper submitters to edit their work
- Post conference proceedings and papers in a searchable format
- Post the original data sets
- Register participants
- Integrate post-conference online discussions

Requirements:
- PHP 4.2 or Higher
- MySQL 3.23.23+ or PostgreSQL 7.1+
- Apache 1.3.2x or Microsoft IIS 6+

What's New in this version:
- OCS 2.3.0 introduced a major rewrite of core aspects of PKP applications that reconciles common code (e.g. shared between OJS, OCS, and the Harvester) into a separate library called the PKP Web Application Library (WAL).