Open Source Desktop Operating Systems Algorithms

* Fast C++ library for linear algebra (matrix maths) and scientific computing * Easy to use functions and syntax, deliberately similar to Matlab / Octave * Uses template meta-programming techniques to increase efficiency * Provides user-friendly wrappers for OpenBLAS, Intel MKL, LAPACK, ATLAS, ARPACK, SuperLU and FFTW libraries * Useful for machine learning, pattern recognition, signal processing, bioinformatics, statistics, finance, etc. * Downloads: http://arma.sourceforge.net/download.html * Documentation: http://arma.sourceforge.net/docs.html * Bug reports: http://arma.sourceforge.net/faq.html * Git repo: https://gitlab.com/conradsnicta/armadillo-code

CRC RevEng is a portable, arbitrary-precision CRC calculator and algorithm finder. It calculates CRCs using any of the 113 preset algorithms, or a user-specified algorithm to any width. It calculates reversed CRCs to give the bit pattern that produces a desired forward CRC. CRC RevEng also reverse-engineers any CRC algorithm from sufficient correctly formatted message-CRC pairs and optional known parameters. It comprises powerful input interpretation options. Compliant with Ross Williams' Rocksoft(tm) model of parametrised CRC algorithms.

Dlib is a C++ toolkit containing machine learning algorithms and tools for creating complex software in C++ to solve real world problems.

basE91 is an advanced method for encoding binary data as ASCII characters. It is similar to UUencode or base64, but is more efficient. The overhead produced by basE91 depends on the input data. It amounts at most to 23% and can range down to 14%.

jMetal is an object-oriented Java-based framework for solving multi-objective optimization problems with metaheuristics.

CDS (Concurrent Data Structures) is a C++ template library of lock-free and fine-grained lock-based algorithms. It contains a collection of concurrent data structures: queues, stacks, sets, maps, etc, and safe memory reclamation schema for concurrent containers - Hazard Pointer and user-space RCU. See doxygen doc http://libcds.sourceforge.net/doc/cds-api/index.html. The source code repo for libcds 2.x has been moved to https://github.com/khizmax/libcds

* Fast GPU linear algebra library (matrix maths) for the C++ language, aiming towards a good balance between speed and ease of use * Provides high-level syntax and functionality deliberately similar to Matlab * Provides an API that is aiming to be compatible with Armadillo for easy transition between CPU and GPU linear algebra code * Useful for algorithm development directly in C++, or quick conversion of research code into production environments * Distributed under the permissive Apache 2.0 license, useful for both open-source and proprietary (closed-source) software * Can be used for machine learning, pattern recognition, computer vision, signal processing, bioinformatics, statistics, finance, etc * Downloads: http://coot.sourceforge.io/download.html * Documentation: http://coot.sourceforge.io/docs.html * Bug reports: http://coot.sourceforge.io/faq.html * Git repo: https://gitlab.com/conradsnicta/bandicoot-code

MhcFS2 - engineering calculator. (v. 1.2) (math expression calculator, scientific calculator, numerical, integral,integration, derivative, root, matrix, differencial, differentiation, equation, LSE,ODE )

devFlowCharter is a complete environment for creating program flowchart, source code generation, and compilation. Its main goal is to be straightforward, educational tool for use during procedural programming classes.

Foreval is compiler of mathematical expressions (formulas) (directly to x86-32 CPU/FPU comand) given as string at run-time. Present as "dll" library and Delphi sources. Can be compiled in FPC (Lazarus). Can be direct connection to the program (without dll). Сurrent version ( v. 9.1.1.393): Examples for Delphi, Lazarus , GCC (Codeblock), (Builder, MSVC - in b.366). Demo: Fractals Julia; Visualizing of functions of complex variable - complex domain coloring , graph plotting & finding roots F(x), Fourier series. Old version (v.8.4.17.250): Examples for Delphi, FPC, Builder, MSVC , GCC (Codeblock) , VB6, FreeBasic. Download files: Foreval_all.7z (Foreval v9 + Foreval v8 + ForevalZ + all examples + doc) - recommend ForevalG9.7z (Foreval v9 + examples v9+ doc) (math parser, math expression parser, evaluate formula, evaluator, symbolic, differentiation, derivative , complex)

Tpl makes it easy to serialize your C data using just a handful of API functions. The data is stored in its native binary form for maximum efficiency. C, Perl and XML supported. Data is portable across CPU types and OS's from Unix to Mac to Windows.

C++ BigInt class that enables the user to work with arbitrary precision integers. Latest Version: 10.3 (2019-03-06)

This project consists of various implementations of the Graphplan algorithm. At the moment we have two implementations of Graphplan: * Emplan - A C++ implementation for Linux, Windows and MacOS X * JavaGP - A Java implementation

bincmp is intended as a cross-platform, tiny and fast binary comparer of two files. it is much faster than "fc /b", for example. bincmp2 is more powerful, but currently windows-only.

Now part of Apache's Mahout machine learning project at http://mahout.apache.org/-- please see there for latest info and code and releases and support!

This project has moved. Please follow the WWW link below.

ForevalZ - compiler of mathematical expressions(formulas) with support of complex numbers (directly to CPU/FPU x86-32 comand) given as string at 'run-time'. (dll library and delphi component). Can be compiled in FPC (Lazarus). Examples for Delphi (2009), FPC , C++(Builder(2009), MSVC(2010), GCC (Codeblock)), VB.NET, VB6, FreeBasic. Demo: Fractals Julia; Visualizing of functions of complex variable - complex domain coloring . (math parser, math expression parser, evaluate formula, evaluator, calculate) (v.1.3.5.231) The project IS CLOSED. Project development of NEXT VERSION see "Foreval" project. Last version v9 support all propertues of ForevalZ.

GLARE is a library and a software for product based optimization of reagent lists in the context of a chemical combinatorial library design. Large virtual combinatorial libraries containing 10^12 products have been optimized within a second.

Libcutils provides a self-contained set of fundamental routines which are essential to basically any Unix utility or daemon application written in C. The library provides fundamental data structures such as lists, hash-maps, strings and parsing functions for JSON or the typical dot-file based configuration data. The following list summarizes the currently supported functionality: * length delimited instead of NULL terminated strings * memory management based on reference counting * several list processing functions like iterators and map-reduce * support of [Ideal Hash Tries](http://infoscience.epfl.ch/record/64398/files/idealhashtrees.pdf) for highly efficient hash map data structures * parsers for [JSON](http://json.org) data and the text configuration files found in Unix system * doubly linked circular lists for reliable event queues * support for test and debugging of memory management problems such as memory leaks

Axiom is a computer algebra system. It consists of an interpreter, a compiler and a library of algorithms. Axiom is an excellent research platform as well as a useful tool for scientific programming.

A .NET Library written in C# 2.0 for doing some mathematic operations as evaluating functions, plotting or finding roots. Visit the Project Web site at http://math-net.sourceforge.net.

ACADO Toolkit is a software environment and algorithm collection for automatic control and dynamic optimization. It provides a general framework for using a great variety of algorithms for direct optimal control, including model predictive control, state and parameter estimation and robust optimization. ACADO Toolkit is implemented as self-contained C++ code and comes along with user-friendly MATLAB interface. The object-oriented design allows for convenient coupling of existing optimization packages and for extending it with user-written optimization routines.

This is example code that I reference in my blogs on software development.

ADTL is an Advanced Data structures Template Library written in C++. it includs sixteen kinds of stl-like contains, such as fibonacci heap,pariring heap,skew heap,avl tree,red-black tree,splay tree,skip list, unrolled linked list and so on.

It is a HTML content extractor library. It is modular, so no need for using confusing regular expressions. The output is a character array, so the calling program just needs to know the file name and it gets the output in char array.