Scilab is an open source, cross-platform numerical computational package and a high-level, numerically oriented programming language. Developed by Scilab Consortium
License: Open Source
fxSolver is a user-friendly tool with strong mathematical modeling capabilities, but it is a paid software with limited community support. In contrast, Scilab is an open-source platform with extensive community support and graphical capabilities, but it comes with a steeper learning curve and less intuitive interface.