Open source technologies and products to watch out for...

Domain	Technology/ Product	Additional Information
Middleware Suites	Glassfish, Jboss, Apache Geronimo	GlassFish is a Sun supported project. You can join the project or one of its several subprojects at glassfish.dev.java.net. While RedHat provides a commercial support for Jboss, a Java EE background will help you gain advanced skill over these enterprise application suite.
ERP	OpenBravo, OpenERP	SourceForge lists hundreds of open source ERP projects. You can gain expertise in these to provide support services to organizations in India
BI Suites	Pentaho	You can join this BI and DataWare house community at Pentaho.com. It is known that Pentaho has hired contributors to the community into the organization.
Enterprise Content Management	Joomla, Mambo, Alfresco	Gaining expertise in one such open source ECW product can land you implementation projects from organizations as they look for open source experts to help in its implementation and deployment.
Databases	MySQL, PostgreSQL	Sun provides certifications for MySQL database. You can be a contributor or else you can gain knowledge of the database as that might help you land up a DBA role for organization using an open source database.
Operating System	Linux, Solaris	For Linux you can join organizations that provide Linux distros like RedHat and Fedora, while OpenSolaris, which is Sun supported, can be joined as a project at opensolaris.org.
Programming Languages	Java, Perl, PHP	Java, Perl and PHP form the basis of many frameworks and other scripting languages. The demand for developers in these open source technologies and frameworks will always be there.