GnuCalc - A good commandline calculator
Download: Get http://gnuwin32.sourceforge.net/downlinks/calc-bin-zip.php and http://gnuwin32.sourceforge.net/downlinks/readline-bin-zip.php (place readline5.dll in GnuCalc bin folder). For integer only, "set /a 2+2" is good enough. Sources: http://gnuwin32.sourceforge.net/packages/calc.htm http://code.google.com/p/iphucwin32/wiki/Running