Listed below are the available solvers organized by problem type. If you need help in selecting a solver, consult the Optimization Tree of the NEOS Guide. The choice of solver then determines the available input options for defining the optimization problem.

Each solver has sample problems and background information on the solver. Be sure to submit a sample problem to get a feel for how to submit optimization problems to NEOS. If you encounter problems, consult the NEOS Server FAQ, or contact us by clicking on the Comments and Questions link at the bottom of the page.

• Administration

  • view job queue
  • view job status/results
  • kill/dequeue job

• Bound Constrained Optimization

  • BLMVM [C Input][Fortran Input]
  • L-BFGS-B [AMPL Input]
  • TRON [FORTRAN Input]

• Combinatorial Optimization and Integer Programming

  • BiqMac [SPARSE Input]
  • concorde [TSP Input]

• Complementarity Problems

  • filterMPEC [AMPL Input]
  • KNITRO [AMPL Input]
  • MILES [GAMS Input]
  • NLPEC [GAMS Input]
  • PATH [AMPL Input][GAMS Input]

• Global Optimization

  • ASA [AMPL Input]
  • BARON [GAMS Input]
  • icos [AMPL Input]
  • LINDOGlobal [GAMS Input]
  • PGAPack [AMPL Input]
  • PSwarm [AMPL Input]
  • scip [AMPL Input][CPLEX Input][GAMS Input][MPS Input][OSIL Input][ZIMPL Input]

• Linear Network Programming

  • MOSEK [AMPL Input][GAMS Input]
  • RELAX4 [DIMACS Input][RELAX4 Input]

• Linear Programming

  • BDMLP [GAMS Input]
  • bpmpd [AMPL Input][LP Input][MPS Input][QPS Input]
  • Clp [MPS Input]
  • Gurobi [AMPL Input][GAMS Input][MPS Input]
  • MOSEK [AMPL Input][GAMS Input][MPS Input]
  • OOQP [AMPL Input]
  • XpressMP [AMPL Input][GAMS Input][MOSEL Input][MPS Input]

• Model Analyzers

• Mixed Integer Linear Programming

  • Cbc [AMPL Input][GAMS Input][MPS Input]
  • feaspump [AMPL Input][CPLEX Input][MPS Input]
  • Glpk [GAMS Input]
  • Gurobi [AMPL Input][GAMS Input][MPS Input]
  • MINTO [AMPL Input]
  • MOSEK [GAMS Input]
  • qsopt_ex [AMPL Input][LP Input][MPS Input]
  • scip [AMPL Input][CPLEX Input][GAMS Input][MPS Input][OSIL Input][ZIMPL Input]
  • SYMPHONY [MPS Input]
  • XpressMP [AMPL Input][GAMS Input][MOSEL Input][MPS Input]

• Mixed Integer Nonlinearly Constrained Optimization

  • AlphaECP [GAMS Input]
  • BARON [GAMS Input]
  • Bonmin [AMPL Input][GAMS Input]
  • Couenne [AMPL Input][GAMS Input]
  • DICOPT [GAMS Input]
  • FilMINT [AMPL Input]
  • KNITRO [AMPL Input][GAMS Input]
  • LINDOGlobal [GAMS Input]
  • MINLP [AMPL Input]
  • SBB [GAMS Input]
  • scip [AMPL Input][CPLEX Input][GAMS Input][MPS Input][OSIL Input][ZIMPL Input]

• Mixed-Integer Optimal Control Problems

  • MUSCOD-II [AMPL Input]

• Multi-Solvers

• Nonlinearly Constrained Optimization

  • CONOPT [AMPL Input][GAMS Input]
  • filter [AMPL Input]
  • Ipopt [AMPL Input][GAMS Input]
  • KNITRO [AMPL Input][GAMS Input]
  • LANCELOT [AMPL Input]
  • LOQO [AMPL Input]
  • LRAMBO [C Input]
  • MINOS [AMPL Input][GAMS Input]
  • MOSEK [AMPL Input][GAMS Input]
  • PATHNLP [GAMS Input]
  • SNOPT [AMPL Input][GAMS Input]

• Nondifferentiable Optimization

  • condor [AMPL Input]

• Semidefinite Programming

  • csdp [MATLAB_BINARY Input][SPARSE_SDPA Input]
  • DSDP [SDPA Input]
  • penbmi [MATLAB Input][MATLAB_BINARY Input]
  • pensdp [MATLAB_BINARY Input][SPARSE_SDPA Input]
  • SDPA [MATLAB_BINARY Input][SPARSE_SDPA Input]
  • sdplr [MATLAB_BINARY Input][SDPLR Input][SPARSE_SDPA Input]
  • sdpt3 [MATLAB_BINARY Input][SPARSE_SDPA Input]
  • sedumi [MATLAB_BINARY Input][SPARSE_SDPA Input]

• Semi-infinite Optimization

  • nsips [AMPL Input]

• Stochastic Linear Programming

  • bnbs [SMPS Input]
  • ddsip [LP Input][MPS Input]
  • sd [SMPS Input]

• Second Order Conic Programming

  • MOSEK [GAMS Input]

• Unconstrained Optimization

  • NMTR [C Input][Fortran Input]