Smartworks - Project Planner 

Project Planner PE 4.7, lets you track and manage your projects in the way you had always wanted. It offers you several views ( Gantt, Network, Resource, Estimation, Risk, Plan..) to get the broad understanding of where your project is heading.
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Sogol 

Math Assistant and Hypertext Notepad for Engineers and Scientists using Windows. Assists with calculating networks of formulae, dynamic simulations, equation solutions, differential, multiple equations and unknowns, with built-in script language.
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pSogol 

Math Asst., Calculator, and Hypertext Notepad for Scientists and Engineers using Pocket PC 2003. Assists with calculating networks of formulae, dynamic simulations, equation solutions, multiple equations and unknowns, builtin script language.
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Project Management Tutor 

A freeware to introduce basics of project management. Highlights and explains all the jargons a project manager need to know in order to manage projects successfully. An ideal tool for a novice project manager.
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