EURO - Home Page  
   The Association of European Operational Research Societies
   http://www.euro-online.org/

INFORMS- The Institute for Operations Research and the Management Sciences  
   INFORMS represents professionals in the fields of operations research and the management sciences (OR/MS), and in related fields such as information technology.
   http://www.informs.org/

Optimization Software Guide  
   A NEOS guide.
   http://www-fp.mcs.anl.gov/otc/Guide/SoftwareGuide/

AMORE  
   Algorithmic Methods for Optimizing the Railways in Europe. An EU Research Trianing Network with participating research groups from Denmark, Germany, Greece, Italy, The Netherlands, and Switzerland.
   http://www.inf.uni-konstanz.de/algo/amore

Metaheuristics Network  
   To improve the understanding of how metaheuristics work.
   http://www.metaheuristics.net/

Ant Colony Optimization (ACO)  
   Studies artificial systems that take inspiration from the behavior of real ant colonies and which are used to solve discrete optimization problems.
   http://iridia.ulb.ac.be/~mdorigo/ACO/about.html

RAND Corporation  
   A nonprofit institution that helps improve policy and decisionmaking through research analysis.
   http://www.rand.org/

IFORS  
   International Federation Of Operational Research Societies
   http://www.ifors.org/

IIE  
   The Institute of Industrial Engineers.
   http://www.iienet.org/

Stochastic Programming E-Print Series  
   Requires subscription.
   http://dochost.rz.hu-berlin.de/speps/

INFORMS Transactions on Education (ITE)  
   ITE is a refereed electronic journal on management science and operations research (MS/OR) education.
   http://ite.informs.org/

International Society of Parametric Analysts (ISPA)  
   Promotes parametric cost modeling techniques and methodologies and the related fields of risk analysis, econometrics, design-to-cost, technology forecasting, and management.
   http://www.ispa-cost.org/

The OR Society  
   Provides training, conferences, publications and information to those working in Operational Research. Features study groups, regional societies, training, publications, conferences and news.
   http://www.theorsociety.com/

Operations Management  
   A division of the Academy of Management.
   http://aom2.pace.edu/om/

Deepa & Sanal's Home  
   Some articles and links on Futures Studies, Systems Thinking and Operations Research.
   http://www.sanalnair.org

Decision Sciences Institute  
   Aids communication between decision science practioners
   http://www.decisionsciences.org