1)   Matrix ActiveX Component 3.1
Matrix ActiveX Component provides for all basic matrix operations plus LU, Cholesky, QR and Singular Value (SVD) decompositions, Eigenvalue and Eigenvector computation for symmetric and non symmetric matrices. Version 3.1 supports complex matrices.
matrix, math, eigenvalues, eigenvalue, eigenvectors, eigenvector, qr, cholesky, lu, decomposition,

 2)   .NET Matrix Library 2.2.5000.72
The Bluebit .NET Matrix Library provides classes for object-oriented algebra. Solves systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalues and eigenvectors problems, and singular value problems.
matrix, vector, math, eigenvalues, eigenvalue, eigenvectors, eigenvector, qr, cholesky, lu,

 3)   SimApp 2.01
Simulation tool for automatic control systems in the time and frequency domain based on the idea of block diagrams. Full visual block diagram editor. Simulation results are displayed in diagrams and data tables. More than 90 basic function blocks.
simulation, automation, control systems, modeling, dynamics, engineering, frequency domain, time domain, Bode plot, closed-loop,