
Gorgeous Karnaugh software:
1) Removes slow, tedious and error prone pen and paper from your life;
2) Gives you a pretty good logic simplification tool;
3) Supports definition of logic function using truth table, from analytic form or by direct editing karnaugh maps;
4) Supports "Dont Care" condition;
5) Supports up to 12 variables (really this is limited only by computer speed and display resolution);
6) Gives "Automatic max coverage lookup" feature for best minimization;
7) Supports "Espresso ...

3DSurG can be used to create 3D surface based on either 3D implicit function ( f(x,y,z)=0 ) or parametric function ( x=f(u,v), y=f(u,v), z=f(u,v) ). The generated 3D surface can be easily scaled and exported to AutoCAD (*.DXF) and text file, or saved as various graphics data format such as Bitmap, JPG, and PNG. 3DSurG also provides rotation, pan, and zoom in/out to view generated model. The support OS is Windows XP/2000/98/NT and .Net framework 2.0 (above) should be installed

PowCost calculates how much electicity and how much that electricity costs for various simple tasks like boiling water for coffee, or heating up a meat pie in the microwave or conventional oven.This information lets you save money and put less stress on the environment.
It uses built in tables of electricity cost in various regions in its calculations. It displays the results in your local currency. The raw information comes from many sources all over the Internet.

Many people do not realise the formidable power of cumulative random selection. For example, many people reject evolution and think that something like the eye could not have formed spontaneously by itself. This is partially correct, it would be quite astonishing if something complexed formed spontaneously by itself but this isn't actually what happens. For example, take the phrase THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG. Imagine thousands of monkeys bashing away at a keyboard  what are t ...

Electronics  DC Current flow  Basic Electronics  Resistor Value Test  Simple DC Circuits  Types of Switching  Variable Voltages  Ohm's Law  DC Voltage  DC Current  Series/Parallel Resistors  AC Measurements  AC Voltage and Current  AC Theory  RCL Series Circuits  RCL Parallel Circuits  Capacitance  Capacitors  Inductance  Inductors  Impedance  Radio and Communication  Attenuators  Passive Filters  Active Filters  Oscillators  Circuit Theorems  Complex Numbers  Electri ...

This Periodic Table is an excellent tool for both students and serious researchers. It has over 20 types of data on each element and all known isotopes in customizable, userexpandable tables. All sixteen numeric data types (plus any useradded data) can be corelated in particle or line graphs. Includes a powerful chemical equation balancer that can solve the most complex organic reactions and calculate molecular weights and amounts of reagents

In physiology and medicine, the Body Surface Area (BSA) is the measured or calculated surface of a human body. For many clinical purposes BSA is a better indicator of metabolic mass than body weight because it is less affected by abnormal adipose mass. Estimation of BSA is simpler than many measures of volume. BSAcalc is the freeware program for the calculation of the Surface Area of the Body. The distinctive feature of BSAcalc is that it has a large selection of formulas for the calculation. Th ...

According to eye diagnosis by yourself,
according to nail diagnosis by yourself,
lots of pictures to teach you to diagnose

Chemical Equation Expert is an integrated tool for chemistry professionals and students. You'll find complicated work such as balancing chemical equations and related calculations so easy and even enjoyable!
Key Feafures 
1. An intelligent balancer
Chemical Equation Expert balances chemical equations rapidly and accurately. An equation as complicated as: 19H2+18Ca(CN)2+6NaAlF4+12FeSO4+6MgSiO3+6KI +2H3PO4+12PbCrO4+24BrCl+6CF2Cl2+24SO2 = 12PbBr2+12CrCl3+6MgCO3+6KAl(OH)4+12Fe(SCN)3+ 2PI3+6NaSiO3+ ...

RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the freespace wavelength, band classification, propagation methods, common transmitter configurations, etc. Calculate antenna lengths or frequencies. View a 3D coverage map by providing a latitude / longitude coordinate and transmitter height. View a 2D representation of line of sight coverage between two latitude / longitude points, including ...

Free Java Applet is a chemistry spreadsheet calculcator  balances virtually any chemical equation and follows up with stoichiometry calculations as well as equillibrium calculations. Percentage mass, titrations, ideal and nonideal gases. Knows the periodic table and computes molecular weight of all entries. Partial pressures and Van der Waals equation. Tutorial has 26 examples to teach how to balance chemical equations. Free demo at mathshowcase.com

A tool for modelling biological systems through boolean networks. Can represent and execute biological models.

Complexity Chaotic Systems Simulator. From living organisms and ecological and social systems to planets, chemical reactions, gravity etc. Also Artificial Life (AL) Simulator.

Freelabs Temperature Convertor it's a tool that helps you to convert temperature between diffrent scales.
Freelabs Temperature Convertor's features include:
Convert from/to Celsius
Convert from/to Fahrenheit
Conver from/to Rankine
Conver from/to R

The program is intended for simulation of kinematics and dynamics of planar and spatial mechanical systems.
The program is intended for using by students and teachers for educational purposes as well as design engineers for express analysis of designed mechanisms in their everyday work. It does not need from the user any special knowledge and operates with wellknown for any design engineer terms and ideas. UM Lite supports data import from SolidWorks, Autodesk Inventor and Kompas3D. From thi ...