The Gnome Chemistry Utils provide a few Gtk programs and a C++ algorithm and widget library related to chemistry. It includes GChemPaint, a 2D chemical editor, and a chemical calculator for raw formule, molar weight, mass composition and isotopic patterns. It also comes with viewers for 3D molecule models, crystal structues, a spectrum viewer, and a periodic table of elements.
hmscalcrpn is a calculator that performs its operations in hours, minutes and seconds instead of integers or floating point numbers. Calculator operation is based on Reverse Polish Notation instead of algebraic notation. The calculator uses a four-value long integer stack to store interim results. A seconds-only mode may be toggled on or off. . hmscalcrpn was written in object-oriented pascal, using the Free Pascal Compiler and the Lazarus IDE.
SPINA is software for determining constant structure-parameters of endocrine feedback control systems from hormone levels obtained in vivo. The first version of this cybernetic approach (SPINA Thyr) allows for evaluating the functional status of the thyroid gland, i.e. thyroid's secretory capacity (SPINA-GT) and sum activity of peripheral deiodinases (SPINA-GD). Additional structure parameters that are calculated include Jostel's TSH index and TTSI.
MACE is a calculator, or algorithm and equation solver suitable for students. It covers 160 logical operations, statistical distributions and functions in the fields analysis, arithmetic, complex functions, linear algebra, differential calculus and statistics. MACE provides a wizard and natural formula and function insertion, also comes with a custom scripting language, and provides extensive help.