The software system allows to solve constrained nonlinear programming problems by an efficient sequential quadratic programming (SQP) method. A nonlinear objective function is to be minimized subject to nonlinear equality or inequality constraints. Final reports and optimziation history plots are available. A large number of test examples is included.

• EASY-FIT Express 1.0
  The software system solves constrained nonlinear parameter estimation problems. Synonyms are data fitting, nonlinear regression, parameter identification, curve and surface...

• EASY-FIT ModelDesign 5.0
  The system solves constrained nonlinear parameter estimation (nonlinear regression, data, curve and surface fitting) problems based on ODEs, DAEs, PDEs, PDAEs, steady-state systems, Laplace equations, and analytical functions

• Task Light 3.0
  Free multilingual test authoring mathematics software enables math teachers and tutors to easily prepare math tests, quizzes and homeworks from a repository of more than 500 of solved math problems in arithmetic, pre-algebra, algebra, trigonometry...