Yahoo! Groups : jini_javaspaces - A group concerned with the development and application of Jini/JavaSpaces-based software. - http://tech.groups.yahoo.com/group/jini_javaspaces/
Sun.com: Rio Architecture Overview - Rio is a layer on top of Jini that addresses quality of service, deployment and failover of Jini services. - http://www.sun.com/software/jini/whitepapers/rio_architecture_overview.pdf
Sun: Jini-Users - Jini related maillist. Subscribe or search archives. - http://java.sun.com/developer/products/jini/subscribe.html
Jini Technology Site - Main Jini site for developers. - http://java.sun.com/developer/products/jini/
Jini Connection Technology - Primary Sun Microsystems site. "Jini enables spontaneous networking of a wide variety of hardware, software, and services." - http://www.sun.com/software/jini/
Jini Corner at Artima.com - Jini-users FAQ, links to Jini resources on the web, discussion forum, a Jini interface repository, the service UI specification, and articles about Jini from the Jiniology column. - http://www.artima.com/jini/
Jini tools - Open source tools for Java Jini setup, troubleshooting, and development. - http://sourceforge.net/projects/jini-tools/
Jini.org - Main site for all Jini community members and interested parties. Realized as a wiki. - http://www.jini.org/
Netbeans.org: Inca X Jini Plugin - The Netbeans development environment Plugin for Jini development. - http://jini.netbeans.org/
Jini WikiWeb - Wiki website about Jini technology and the Jini Community. - http://www.cdegroot.com/cgi-bin/jini
Nuggets for Jini - Simple Jini examples with explanations. - http://www.enete.com/download/#_nuggets_
Jini Planet - Information, by Jini developer, author of "Core Jini", Keith Edwards. - http://www.kedwards.com/jini/
Openwings - Sun & Motorola sponsored open specifications for a framework that enables the development of highly available, secure, distributed systems for mission critical applications. The first implementation is built on Jini. - http://www.openwings.org/