NTIS

Operating System

Red Hat
http://www.redhat.com

CentOS
http://www.centos.org/

Ubuntu
http://www.ubuntu.com/

Database System

MySQL
http://www.mysql.com

PostgreSQL
http://www.postgresql.org

Mail and Collaboration

Zimbra
http://www.zimbra.com/

Content Management System

Drupal
http://drupal.org

Joomla!
http://joomla.com

Enterprise Content Management System

Alfresco
http://www.alfresco.com/

Enterprise resource Planning

Openbravo
http://www.openbravo.com/

Business Process Management System

Intalio
http://www.intalio.com/

Data Integration and Business Intelligence

Talend
http://www.talend.com/

JasperSoft
http://jaspersoft.com/

Pentaho
http://www.pentaho.org/

Enterprise Portal

Liferay
http://www.liferay.com/