SCILAB

It is a high level programming language in that most of its functionality is based around the ability to specify many computations with few lines of code.It is similar in functionality to MATLAB, but is available for download at no cost.GOTO SCILAB
Fig shows the scilab editor
Actually the software is faster than the matlab environment ,the personal experience proves scilab faster and consumng less space
while matlab consumes 3gb+,scilab takes only 30mb+


Fig below shows the scilab graphic window