With Algeo, you can easily plot functions, find their intersections, derivatives, etc. You can solve equations as well. Some other features: calculates Taylor-series, builtin hyprebolic functions, and matrix operations
Science Manual is combination of Unit Convert, Scientific Constants and Chemical Elements.
It contains more than 676 units grouped in 38 categories, 112 chemical elements and more than 110 scientific constants sorted in 5 ategories
Aritm trains you in simple mental calculation. This program teaches its users the addition, subtraction, multiplication, and division tables. It employs a very effective method, which makes the process short with these useful tables