Apache OpenMeetings is a multi-language customizable video-conferencing and collaboration system. It supports audio/video and allows you to see the desktop of any participant. It includes a whiteboard, the ability to import a variety of image formats, invitations, a moderation system, backup and language modules, private and public conference rooms, and the ability to record meetings. The project also provides integrations for Asterisk, Jira, Confluence, Moodle, Sakai, and SugarCRM, and connectors for LDAP and ADS.
The Apache Open For Business Project is an enterprise automation software project that includes ERP, CRM, E-Business/E-Commerce, SCM, MRP, and CMMS/EAM functions. It is a foundation and starting point for enterprise solutions and can certainly be used out of the box, but is also great for creating specialized applications.