100 Rules for Project Managers (Some great gems of project management wisdom from NASA's Goddard Space Flight Center.)

     http://www.altisinc.com/Links/100_Rules.html

12Manage – Management method, models and theories

     http://www.12manage.com/

4PM – Free project management knowledge library 

     http://www.4pm.com/

AllPM - Project Manager's Resource Center

     http://www.allpm.com/

ASAPM (American Society for the Advancement of Project Management)

     http://asapm.org/

CapacityPlanning.Com    

     http://www.capacityplanning.com/
CIO Magazine (Good information for a variety of subjects including project management.)

     http://www.cio.com

CM Today - Configuration Management News    

     http://www.cmtoday.com/

Cutter IT Journal    

     http://www.cutter.com/itjournal/
Defense Acquisition University 4 PMs    

     http://www.dau.mil/pubs/pmtoc.asp
Earned Value Management    

     http://www.acq.osd.mil/pm/

Effective Meetings    

     http://www.effectivemeetings.com

e-Programme - Portfolio Management Web Site    

     http://www.e-programme.com/
GanttHead - Developed for PMs by PMs

     http://www.gantthead.com/

HrGopher - Good HR information for everyone      

     http://www.hrgopher.com/

Information Systems Specific Interest Group (PMI)    

     http://www.pmi-issig.org
IPMA (International PM Association)

     http://www.ipma.ch

IT-Director.Com, information for the IT Director    

     http://www.it-director.com/

itmWEB, IT Management information    

     http://www.itmweb.com

ITtoolKit for Managing Technology, PM Toolkits and information    

     http://www.ittoolkit.com/index.shtml

The wisdom of Max Wideman

     http://www.maxwideman.com/

Methodology.Org    

     http://www.methodology.org
MIT's Project Management Resources    

     http://web.mit.edu/pm/

NewGrange - Center for Project Management    

     http://www.newgrange.org/
PM Boulevard. 

     http://www.pmboulevard.com/home.jsp

PMI (Project Management Institute)

     http://www.pmi.org   

Portfolio Management Forum    

     http://www.portfoliomgt.org/
PowerPointers - Creating Effective Presentations    

     http://www.powerpointers.com/

Product Development & Management Association    

     http://www.pdma.org/

Project Development Disciplines from Paul Allen    

     http://members.aol.com/AllenWeb/index.htm

ProjectHero - Real World War Stories    

     http://www.projecthero.com/
Project Magazine - Free Online Resource    

     http://www.projectmagazine.com/

Project Management Forum    

     http://www.pmforum.org/

Project Management W3 Site    

     http://www.projectmanagement.com/

Project Manager Today

     http://www.projectnet.com/
Project Smart Resource Centre    

     http://www.projectsmart.fsnet.co.uk/

Projects @ Work Magazine

     http://www.projectsatwork.com/

Service Level Management    

     http://www.nextslm.org/

The Software Engineering Laboratory (NASA)    

     http://sel.gsfc.nasa.gov/website/index.htm

Software Program Manager's Network    

     http://www.spmn.com

Software Project Management Sites    

     http://huxley.baz.com/kjordan/swse625/sites.html

SoftwareDioxide - Ecosystem 4 Software    

     http://www.softwaredioxide.com/

SoftwareProjects.Org     \

     http://www.softwareprojects.org/

StickyMinds - Resource 4 Building Better Software    

     http://www.stickyminds.com/

TechGuide - Practical Guidance for IT Pros (BNET)

     http://www.techguide.com/

University of Washington Project Management Guidelines 

     http://www.washington.edu/computing/pm/

Virtual Project Management & Teams    

     http://www.vrtprj.com/

Workaholic International Network    

     http://www.workaholic.org/

another nasa link

http://appel.nasa.gov/node/167

Kansas Gov site

http://www.da.ks.gov/kito/ITPMM.htm