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	1st Calculator 1st Calculator is a handy and useful expression calculator and unit converter with skins. Main features: fully customizable interface with skins; keyboard shortcuts; all arithmetic operations, more th ...				Cost: $15.00 Buy
	3D Grapher 3D Grapher is a feature-rich yet easy-to-use graph plotting and data visualization software suitable for students, engineers and everybody who needs to work with 2D and 3D graphs. With 3D Grapher you ...				Cost: $25.00 Buy