ChemAP 2000 is a Periodic Table features 112 elements. It has more than 30 data items on each element. The program includes utils to compare elements, calculate weights, list properties in sorted lists, graph the properties, etc, and more tables...

Compact explanatory Russian dictionary of 'agnonyms', or not commonly used words. It contains loan words, terminology, homonyms, antique words and modern slang...

When we are playing games, surfing on line or doing some other work we spend a lot of time on waiting. Learn to Speak Spanish is very useful in improving your spoken Spanish and building your vocabulary. It will make every second of your time useful!