Sicyon = scientific (VBScript/JScript) calculator + matrix operations + constant database + units converter + solver + curve-fit. Sicyon is all-in-one scientific calculator for every student and professor, researcher and developer. The core of Sicyon is an expression (VBScript/JScript) calculator with features as: estimate a function using variables, user-defined functions and Sicyon objects\; plot/tabulate a function\; solve an equation, minimums, maximums and definite integral of a function\; fit a function over data set\; sophisticated units converter\; database reader with various physical and chemical constants\; matrix operations\; set of plugin tools.