1. Star Office:
Affordable, interoperable desktop productivity applications.
http://www.sun.com/software/star/staroffice/index.jsp

2. Web Server:

Sun Java System Web Server (formerly Sun ONE Web Server) is a secure, reliable, easy-to-use Web server designed for medium and large business applications.
http://www.sun.com/software/products/web_srvr/home_web_srvr.xml

3. Portal Server:
The Portal Server provides a new level of enterprise productivity, enabling users and groups to work together easily and securely within the requirements of a dynamic organizational structure.
http://www.sun.com/software/products/portal_srvr/index.xml

4. Communication Server:
The Sun Java Communications Suite delivers industry-leading email, calendaring and real-time collaboration functionality for service providers and large organizations worldwide. It provides an extensible, standards-based development platform, offering improved performance, reliability and scalability at a lower TCO. http://www.sun.com/software/javaenterprisesystem/communications_suite/index.xml

5. Sun Java Enterprise Application Server:

Sun Java System Application Server provides a Java 2 Platform, Enterprise Edition (J2EE platform) 1.4 compatible platform for developing and delivering server side Java applications and Web services. http://www.sun.com/software/products/appsrvr/index.xml

Sun Secure Global Desktop Software provides secure access to server-based applications running on Microsoft Windows, Solaris, Linux, HP-UX, AIX, Mainframe and Midrange systems from a wide variety of client platforms and devices. The software web-enables legacy applications quickly without costly re-writes and delivers those applications side-by-side with modern server-based applications. This allows for consolidation of critical applications and data onto highly reliable, centrally maintained servers and off individual desktop and laptop computers, improving manageability while increasing flexibility. http://www.sun.com/software/products/sgd/