Agile Community

Agile Project Leadership Network - The APLN was founded in 2004 by a group of people who are active in writing about, practicing, and evangelizing the movement towards fast, flexible, customer value driven approaches to leading projects of many types. http://www.apln.org/
The AgileAlliance - a non-profit organization dedicated to promoting the concepts of Agile software development, and helping organizations adopt those concepts.http://www.agilealliance.org
The Home of Lean Software Development - Mary and Tom Poppendieck are a great source for consulting and education on the factors which underlie the speed, agility, discipline and creativity necessary to produce software in smaller batches. http://www.poppendieck.com
Scrum Alliance - The Scrum Alliance is a non-profit organization committed to delivering facilities, stories, courses, and other materials that will help Scrum users be successful. Founded by Ken Schwaber, Mike Cohn, and Esther Derby, the Scrum Alliance's mission is to promote increased awareness and understanding of Scrum, provide resources to individuals and organizations using Scrum, and support the iterative improvement of the software development profession. http://www.scrumalliance.org
XProgramming.com - Ron Jeffries' resource of XP techniques, tips, and experience reports offer a passionate - and sometimes humorous - expression of what Extreme Programming means to people who care about it. http://xprogramming.com
DSDM Consortium - DSDM was founded an in 1994 and is the owner and developer of the original Agile framework. In its latest form - Atern - it is free to view and use for end-users. The DSDM Consortium manages and promotes the framework including: the continued development of the framework, the provision of support resources, individual certification and the accreditation of training organisations. www.dsdm.org