1. NEOS Server: State-of-the-Art Solvers for Numerical Optimization.
https://neos-server.org/neos/
2. IBM ILOG CPLEX Optimizer.
https://www.ibm.com/products/ilog-cplex-optimization-studio/cplex-optimizer
3. The Leader in Decision Intelligence Technology — Gurobi Optimization.
https://www.gurobi.com
4. Cardinal Optimizer (COPT).
https://www.shanshu.ai/copt
5. GNU Linear Programming Kit (GLPK)..
https://www.gnu.org/software/glpk/