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Smart Calculator is beautifully designed, having both standard and scientific modes of calculations. It is built to run anywhere, as its written completely in Java. It featured different types of Look and Feels, using Java's Swing PLAF library.
Calculator for the 4-digit hexadecimal "configuration register" used in Cisco routers for bootup settings. It is meant to be an open source (GPLv3) and cross-platform alternative to the freeware program boson.com hosts.
This is a Reverse Polish Notation (RPN) Fraction Calculator. It works like any other RPN calculator, except that it operates on fractions instead of decimal numbers. Decimal number entries are not permitted. Whole numbers are permitted.
Can calculate mathematical expression. It have a module system witch make it very easy to add own functions. Other features are a graph painter and a tiny programming language designed too make it easy too write small mathematical tools.