Jetspeed has support for the following features:

• Soon to standardize on a Java Portlet API specification
• Template-based layouts including JSP and Velocity
• Supports remote XML content feeds via Open Content Syndication
• Custom default home page configuration
• Database user authentication
• In-memory cache for quick page rendering
• Rich Site Summary support for syndicated content
• Integration with Cocoon, WebMacro and Velocity so that you can develop with the newest XML/XSL technology.
• Wireless Markup Language (WML) support
• XML based configuration registry of portlets
• Full Web Application Archive (WAR) support
• Web Application development infrastructure
• Local caching of remote content
• Synchronization with Avantgo
• Fully portable across all platforms that support JDK 1.2 and Servlet 2.2
• Integrated with Turbine modules and services
• Profiler Service to access portal pages based on user, security (groups, roles, acls), media types, and language
• Persistence Service available to all portlets to easily store state per user, page and portlet

Features that are (hopefully) implemented soon:

• Skins so that users can choose colors and display attributes
• Customizer for creating new pages, selecting portlets and defining layouts for individual pages