FICO Xpress

Xpress
Developer(s)	FICO
Initial release	1983; 34 years ago (1983)

Stable release	8.1
Development status	Active
Type	Operations Research, Mathematical optimization
License	Proprietary
Website	www.fico.com/xpress

The FICO Xpress-Optimizer is a commercial optimization solver for linear programming (LP), mixed integer linear programming (MILP), convex quadratic programming (QP), convex quadratically constrained quadratic programming (QCQP), second-order cone programming (SOCP) and their mixed integer counterparts. Xpress includes a general purpose non-linear solver, Xpress-NonLinear, including a successive linear programming algorithm (SLP, first-order method), and Artelys Knitro (second-order methods).

Xpress includes its modelling language Xpress-Mosel.

Xpress was originally developed by Dash Optimization, and was acquired by FICO in 2008.