Aprisa 

Aprisa is software that simplifies the project estimation process for commercial, industrial, and residential construction companies. Includes everything from HVAC, Paint and Plumbing to Steel, Valves and Labor. Has one-click access to vendors.
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Engineering Power Tools 

ENGINEERING POWER TOOLS solves a wide variety of common engineering problems quickly and easily. Over 70 programs and data tables integrated into one easy-to-use package. Categories include Math, HVAC, Mechanical, Electrical, Materials & Structural.
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EngCalc(Mechanical) - Palm Calculator 

50 formulae catering to Mechanical Engineering.FREE !!MxCalc(worth $4.99 embedded in the program)Unit Coverter.Scientific Evaluator.FREE !!Property Tables(worth $2.99) and more..
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EngCalc(Mechanical) - PocketPC Calculator 

50 formulae catering to Mechanical Engineering.FREE !!MxCalc(worth $4.99 embedded in the program)Unit Coverter.Scientific Evaluator.FREE !!Property Tables(worth $2.99) and more..
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EngCalc(Hydraulic) - PocketPC Calculator 

50 formulae catering to Hydraulic Engineering.FREE !!MxCalc(worth $4.99,embedded in the program)Unit Coverter Scientific Evaluator.Time Req. to Empty a Sphere (Sharp Edged Orifice) and more..
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EngCalc(Hydraulic) - Palm Calculator 

50 formulae catering to Hydraulic Engineering.FREE !!MxCalc(worth $4.99,embedded in the program)Unit Coverter Scientific Evaluator.Time Req. to Empty a Sphere (Sharp Edged Orifice) and more..
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