Solvers

BPMPD - linear programming.
CPLEX - linear and integer programming.
C-WHIZ - linear programming models.
Excel and Quattro Pro Solvers - spreadsheet-based linear, integer and nonlinear programming.
FortMP - linear and mixed integer quadratic programming.
GAUSS - matrix programming language.
GIPALS32 - Linear programming callable library based on interior-point method.
HS/LP Linear Optimizer - linear programming with OMNI language.
KORBX - linear programming.
LAMPS - linear and mixed-integer programming.
LINDO Callable Library - linear, mixed-integer and quadratic programming.
LINGO - linear, integer, nonlinear programming with modeling language.
LOQO - Linear programming, unconstrained and constrained nonlinear optimization.
LP88 and BLP88 - linear programming.
MINOS - linear programming and nonlinear optimization.
MOSEK - linear programming and convex optimization.
MPSIII - linear and mixed integer programming (includes OML, WHIZARD, and DATAFORM).
OML - linear and mixed-integer programming.
OSL - linear, quadratic and mixed-integer programming.
PCx - linear programming with a primal-dual interior-point method.
PORT 3 - minimization, least squares, etc.
PROC LP - linear and integer programming.
QPOPT - linear and quadratic problems.
SQOPT - large-scale linear and convex quadratic programming problems.
What'sBest - linear and mixed integer programming.
WHIZARD - linear and mixed-integer programming.
XPRESS-MP from Dash Associates - linear and integer programming.

Analysis Aids

AIMMS Math Program Inspector - linear & mixed integer programming model analysis and debugger.
ANALYZE - linear programming model analysis.
MPROBE - an assistant for mathematical programming.
RANDMOD - linear programming model randomizer.