326)   XCBA Cargo Office 2.0
XCBA Cargo Office is a user-friendly Draft Survey and Lashing calculation program for Ships' Officers and Marine Surveyors.
License:Shareware, 49.95 to buy Size: 36144KB

 327)   ZGrapher 1.4
This graphing calculator can plot y(x), x(y), polar, parametric and table-defined functions. Calculus features include obtaining derivatives, equations of tangents and normals, numerical integration, regression analysis.
License:Freeware, 0 to buy Size: 620KB

 328)   ZigZag 1.1
ZigZag is a handy tool to plot and explore math functions. It can plot Cartesian (Y(x) and X(y)), polar, parametric and also table-defined graphs
License:Shareware, 23 to buy Size: 610KB