Open Source Simulation Software

Integrated Development Environment for some microcontrollers based on 8051(e.g. AT89S8253). Supported languages are Assembly and C. It has its own simulator, assembler, editor and many other tools. See the project web site for more details and the newest updates.

BallCalc is attempt to make a good, easy to use, full featured and FREE!!! ballistics calculator for the Windows Mobile based on the GNU External Ballistics engine, and eventually other, platforms.

Simulate electric current density in any conductive plane shape described by a bitmap image.

!!! This project is currently CLOSED. There is a new version of API available under LGPL license at https://github.com/gehtsoft-usa/BallisticCalculator1 There is a new version of application in progress (ported to net framework 5.0) https://github.com/nikolaygekht/ballistic.calculator.app Ballisitic Calculator based on JBM's implementation 3-degree of freedom model, ported to C#, improved to support metric system and extended by some math from Litz's "Applied Ballistic" book. Calculator displays ballistic tables, graphs, comparison graph and reticle images. The application is free to use under GNU license

A handy tool designed to help beginner Astronomers. The software Astronomy CCD Calculator uses NASA/SkyView survey resource which provides CCD images of the night sky.It helps you plan an observation by letting you play with different instruments resulting various "Fields Of View" so you can see what your camera will capture and choose the best target for the session.

That project aims at providing a clean API and a simple implementation (C++ library) of an Airline-related Seat Inventory Availability Calculation system. That library uses the Standard Airline IT C++ object model (http://sf.net/projects/stdair).

This project introduces a console application designed for functional and behavioral emulation of the old Soviet calculator EPOS-73 (ЭПОС-73) also known as Elektronika B3-11 (Электроника Б3-11). The project is conceived as an auxiliary for verification of the switch-level simulator based on Verilog HDL of the said apparatus. Calculator model EPOS-73 is interesting in that it was one of the first models of Soviet computing performed at LSI, that were fully designed by Soviet engineers. It was used a set of four LSIs series K1ZHG451...4 (К1ЖГ451...4) or later designation K145HK1...4 (К145ХК1...4). The choice of this calculator as an object of modeling is due to the presence of (miraculously survived to this day) a sufficient set of design documentation for the technology applied in its LSIs, including a technical description of the device, revealing its calculating algorithms. The project is intended for research and education purposes.

This project introduces a console application designed for functional emulation of the USA old calculator series Wang 700 and their USSR derivatives 15VSM (15ВСМ). The main goal of the project is emulation of those models made in Soviet Union: 15ВСМ-5, 15ВМ16/32/128 - which are also known as D3-28 (Д3-28). The choice of them is due to the extremely strong and authentic CPU command set developed by Soviet engineers as a superset around the original Wang 700's command set. While Wang 700 were just programmable calculators, Soviet machines were almost complete computers taking into account their advanced CPU command set, huge RAM volume, ability to work with wide set of peripheral devices including the video terminal 15IE (15ИЭ) and existence of BASIC and other programming languages written as loadable applications. Still I consider them as calculators also due to some aspects exclusively specific to calculators. The project is intended for research and education purposes.

Evrika is a science simulator and advanced calculator, which is based on modules. Modules are libraries containing definitions of concepts that can be used in the simulation. By definitions we mean properties, actions, reactions, etc. Evrika is used for creating both simulations and modules, so you can build your own module of elements, then use them to create virtual experiments and simulations. Also, you can make advanced calculations. Evrika is basically an executable that reads and interprets code, outputing result. Each new version will offer new possibilities to define your elements and use them, so it is important to always have the last release. Of course, Evrika is backward-compatible, cross platform and free to use. In the near future an advanced editor and viewer will be created, so you can better manage your code and view the results.

Emulator of the newer Hewlett Packard Handheld Calculator Models with ARM CPU (HP49g+ HP50).

Kontinuum is a calculator program that enables the user to calculate all probabilistic aspects of the Kontinuum RPG system, especially the dice rules.

QtoNum is a calculator for qualitative values (-, +), intervals and crisp numbers with arbitrary precision. QtoNum also handles infinitesimals and infinites. All these types can be mixed in expressions and conversions are performed automatically. QtoNum can be used as an interactive calculator (command line) and as a calculus library.

We introduce a completely visual representation based on typed Mind Maps to represent steps of calculation for a pure untyped lambda calculator, VLM.

Zwicker's Loudness Calculation (ISO532B) Tools. The project includes a loudness calculation program based on Zwicker's Method, and a WAV file analyzer generating data files for loudness calculation. Documentation and test files are also provided.

Console based application which should compile on any system supporting c++. Includes calculations like blood alcohol content, 1/4 mile run, liter conversion, etc.

ISL Equilibrium Calculator,which process solid-liquid equilibrium calculation by using Harvie extended Pitzer's ion interaction electrolyte solution model and particle swarm optimization Gibbs free energy minimization (GEM). ISLEC is an efficient tool for solid-liquid equilibrium calculation, and can simulate the crystallization path of seawater and salt lake brines. ISLEC is suitable for related researches and process design.

The program does nmr product operator calculations for one, two, three and four spins. Receiver phase cycling is possible in conjunction with pulse phase cycling to simulate coherence pathway selection. An extensive manual and help files are included. Currently running under Linux and Windows.