(Resources are taken from Michael Trick's Operations Research Page)

              Operations Research Models and Methods by Paul A. Jensen & Jonathan F. Bard
                        
                    1.  Operations Research Models
                   
2.  Operations Research Methods      
                   
3.  Excel Addins

              Andrew Goldberg's Network Optimization Library  - Downloads

              New Light Industries, Ltd 
                 
                    1.  Genetic Algorithms - Generator Genetic Algorithm Program
                    2.  Demo Version of Generator - for Download  

              Linear Programming: Foundations and Extensions - by Bob Vanderbei 

                    1. Lecture Notes - Graduate Level  
                    2. Network Simplex Method - Pivot Tool (Min-Cost Network-Flow Problems)     
                    3. Online Exercises -  Minimum Cost Network Flows     
                    4. Additional Exercises - Network Flow Problems

              Library of Location Algorithms - A software system of algorithmic methods in location planning

                    1. List of algorithms -  Downloads
                    
              MPM Maximum Network Flow Module, Beta 0

              Single- or Multi-Process Optimization over Networks Algorithm (SYMPHONY) - Parallel Branch, Cut and  
                  Price Software

                    1. Online Symphony Tutorial
                    2. Online Symphony User Guide
                    3. Software for Downloads
                               - Symphony
                               - Vehicle Routing Solver (implemented using SYMPHONY)
                               - COIN/BCP Branch, Cut, and Price Framework  
                               - CONCORDE Traveling Salesman Problem Solver  - Download
                               - ABACUS Branch, Cut, and Price Solver  - Download (Trial Version)
                     
            Tom Sawyer Software - Software for graph and network layout 

                    1. Product Demonstration and Trial Download
     

            Northwestern University Production and Logistics Laboratory - Tools for Logistics Problem Solving 

            Imperial College Management School -  OR-Library    
 
                    1. Network Flow Problems       
         
            VBCTOOL - A GUI for Visualization of Branch Cut Algorithms -  Download

            Network Optimization Codes - by Dimitri Bertsekas

            Lin-Kernighan heuristic for the Traveling Salesman Problem and the Minimum Weight Perfect Matching 
                 Problems - LK the Program Download

            IFORS - Tutorials
                    
                    1. Shortest Path Problem
                    2.
Dijkstra's Algorithm
                    3. Knapsack Problem
                    4. Critical Path Method