...
For more information: http://www.unicon.net/blog/3/bookmarks_portlet_overview 
Example screen shot below:
Jasig Widget Portlets
The Jasig Widget Portlets is a set of numerous small, user-facing utility portlets contained in a single project. These portlets are designed to require little configuration and present information and tools that could be used by generic institutions.
...
For more information: https://wiki.jasig.org/display/PLT/Weather+Portlet
Example screen shot below:
Web Proxy Portlet
The Web Proxy Portlet is used to incorporate arbitrary web content as a portlet. It provides mechanisms for connecting to and rendering HTML with options for clipping, maintaining session information, handling cookies. Proxied content is rendered within the portlet window. Web Proxy Portlet is often used to incorporate web content or applications that are built and run in non-Java environments allowing a site flexibility for integrating with many different technologies.
...