SpeQ is a small, extensive mathematics program with a simple, intuitive interface. All calculations are entered in a sheet. In there you can freely add, edit and execute calculations. SpeQ supports all common functions, constants, and units. Furthermore, you can define custom variables and functions, and plot graphs of your functions.

Features:
-Expression calculations with arithmetic, conditional, logical and bitwise operators
-Around 100 built-in mathematical, physical and conditional constants
-Around 60 built-in functions for Analysis, Arithmetic, Complex numbers, Hyperbolic, Integers, Logical, Probability, Numeral systems, Statistics, Trigonometry
-Define your own variables and functions for use in calculations
-Plot fully adaptable graphs, trace the plotted functions, save your graphs
-Extensive support for units
-Decimal, binary, hexadecimal and octal numeral systems
-Calculations with lists
-Complex number calculations
-Colored workarea
-Save and load sheets
-Orderly overview of all available functions and constants in the Functionstree
-A list with all defined variables and functions in the Memorylist
-Context-sensitive help and a detailed users guide

Platforms: Win95 , Win98 , WinME , WinNT 3.x , WinNT 4.x , Windows2000 , WinXP , Windows2003 , Windows Vista Starter , Vista , Windows Vista Home Basic , Windows Vista Home Premium , Windows Vista Business , Windows Vista Enterprise , Windows Vista Ultimate , Windows Vista Home Basic x64 , Windows Vista Home Premium x64 , Windows Vista Business x64 , Windows Vista Enterprise x64 , Windows Vista Ultimate x64

System requirements: Pentium 166 MHz, 32 MB RAM, 600 kB harddisk space