• Announcing What'sBest 17, LINGO 19, and LINDO API 13 New releases with faster solvers and new features

    Announcing What'sBest 17, LINGO 19, and LINDO API 13 New releases with faster solvers and new features

  • What'sBest! 17.0 - Excel Add-In for Linear, Nonlinear, and Integer Modeling and Optimization

    What'sBest! 17.0 - Excel Add-In for Linear, Nonlinear, and Integer Modeling and Optimization

  • LINGO 19.0 - Optimization Modeling Software for Linear, Nonlinear, and Integer Programming

    LINGO 19.0 - Optimization Modeling Software for Linear, Nonlinear, and Integer Programming

  • LINDO API 13.0 - Powerful Library of Optimization Solvers and Mathematical Programming Tools

    LINDO API 13.0 - Powerful Library of Optimization Solvers and Mathematical Programming Tools

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  • What'sBest!

    What'sBest! lets you build linear, nonlinear, and integer models in Excel. Models are easy to build and understand using standard spreadsheet equations.


  • LINGO

    LINGO is a comprehensive tool designed to help you build and solve linear, optimization models quickly, easily, and efficiently.



  • LINDO API

    LINDO API creates optimization applications. It allows you to plug the power of the LINDO solver right into customized applications that you have written.

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Release 19 of LINGO includes a wide range of performance enhancements and new features.

Solver Enhancements

Order of Magnitude Faster on Long Skinny Linear Models Enhancements to the Simplex Solvers allow significantly faster solution of linear models with many times more variables than constraints.

Faster When Simultaneously Solving LPs Using Different Solvers

An improved feature allows users to concurrently run the Primal Simplex, Dual Simplex, and Barrier solver each on a separate core ensuring the solution in the shortest time regardless of which solver is fastest.

Integer Solver Improvements

Better performance on many integer models has been achieved through improved selection of default settings for cut generation and solution heuristics.

Enhancements to the Quadratic/Conic Solvers

Models with ex and xk terms are solved faster -- so called Barrier Solver exponential and power cones.

Numerous Global Solver Enhancements

  • Improved recognition and exploitation of convexity of various composite functions.
  • Improved performance for models with convex-concave functions.
  • Models with ratio/fractional objective, including MIP, solve an order of magnitude faster.
  • Substantial speed improvements on Non-convex Quadratically Constrained Quadratic Programs.

Feature Enhancements

  • Expanded capabilities for the All Different constraint type.
  • New feature to delete all members of a derived set.
  • There is a new function for building interactive applications that allows you to prompt the user for input at runtime.
  • More efficient use of user supplied starting point information for faster solution of integer models.
  • New features to facilitate building and debugging LINGO models embedded in Excel workbooks.
  • More efficient storage of Stochastic Programming scenarios allowing the solution of significantly larger stochastic models.
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