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Browse free open source C Business Software and projects below. Use the toggles on the left to filter open source C Business Software by OS, license, language, programming language, and project status.

  • Monitor your whole IT Infrastructure Icon
    Monitor your whole IT Infrastructure

    Know what's up and what's new: Monitor all your systems, devices, traffic and applications.

    Caters to tech staff, system Administrators, and companies of any size, from small and medium sized businesses to enterprises that need their IT network to be reliable and easy to monitor in real-time. Equipped with an easy-to-use, intuitive interface with a cutting-edge monitoring engine. PRTG optimizes connections and workloads as well as reducing operational costs by avoiding outages while saving time and controlling service level agreements (SLAs).
    Start Your Free PRTG Trial Now
  • Fully managed relational database service for MySQL, PostgreSQL, and SQL Server Icon
    Fully managed relational database service for MySQL, PostgreSQL, and SQL Server

    Focus on your application, and leave the database to us

    Cloud SQL manages your databases so you don't have to, so your business can run without disruption. It automates all your backups, replication, patches, encryption, and storage capacity increases to give your applications the reliability, scalability, and security they need.
    Try for free
  • 1
    GnuWin

    GnuWin

    Provides native Win32 open source ports and utilities

    GnuWin provides Win32-versions of GNU tools, or tools with a similar open source licence. The ports are native ports, relying only on libraries provided with any modern 32-bits MS-Windows operating system, such as 2000 / XP / Vista / 7
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    Downloads: 33,612 This Week
    Last Update:
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  • 2
    gnuplot

    gnuplot

    A portable, multi-platform, command-line driven graphing utility

    A famous scientific plotting package, features include 2D and 3D plotting, a huge number of output formats, interactive input or script-driven options, and a large set of scripted examples.
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    Downloads: 5,443 This Week
    Last Update:
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  • 3
    FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!
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    Downloads: 1,795 This Week
    Last Update:
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  • 4
    vDos

    vDos

    Run DOS applications in Windows.

    vDos is specific to run serious (mainly text mode) DOS applications in Windows 32 or 64-bit, Windows 7 or later. You need at least already use such a DOS application to appreciate vDos. If you don’t, want to play with DOS (or its games): vDos isn’t meant for you! Recent versions (latest 2024.05.01) and the vDos forum are now hosted at: https://www.vdos.info
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    Downloads: 63 This Week
    Last Update:
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  • Monitoring, Securing, Optimizing 3rd party scripts Icon
    Monitoring, Securing, Optimizing 3rd party scripts

    For developers looking for a solution to monitor, script, and optimize 3rd party scripts

    c/side is crawling many sites to get ahead of new attacks. c/side is the only fully autonomous detection tool for assessing 3rd party scripts. We do not rely purely on threat feed intel or easy to circumvent detections. We also use historical context and AI to review the payload and behavior of scripts.
    Learn More
  • 5
    The SourceForge OpenRasMol project is an adjunct to the RasMol and OpenrasMol project at http://rasmol.org. It is hoped that the SourceForge OpenRasMol project will provide a convenient focal point for active collaborative contributions.
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    Downloads: 140 This Week
    Last Update:
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  • 6
    OpenL2TP is an L2TP client/server written specifically for Linux. It has been designed for use as an enterprise L2TP VPN server or for use in commercial, Linux-based, embedded networking products.
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    Downloads: 81 This Week
    Last Update:
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  • 7
    UV-CDAT

    UV-CDAT

    Ultrascale Visualization Climate Data Analysis Tools

    Ultrascale Visualization Climate Data Analysis Tools (UV-CDAT), is a powerful and complete front-end to a rich set of visual-data exploration and analysis capabilities well suited for climate-data analysis problems.
    Downloads: 10 This Week
    Last Update:
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  • 8
    GSolaar

    GSolaar

    Polyhedron paper building

    EN : Visualization of non-convex polyhedra and pattern generating for paper building. FR : Visualisation de polyèdres non-convexes et génération de patrons pour une construction papier.
    Downloads: 3 This Week
    Last Update:
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  • 9
    Null Groupware is a self-hosting web based groupware system written in c. It's portable, modular, and has a complete api for third party developers' extensions. Features include event scheduling, call tracking, contact management, web-based email, a w
    Downloads: 4 This Week
    Last Update:
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  • Run applications fast and securely in a fully managed environment Icon
    Run applications fast and securely in a fully managed environment

    Cloud Run is a fully-managed compute platform that lets you run your code in a container directly on top of scalable infrastructure.

    Run frontend and backend services, batch jobs, deploy websites and applications, and queue processing workloads without the need to manage infrastructure.
    Try for free
  • 10
    Avenzoar Digital Pathology Tool
    Avenzoar is a one-year exploration of renal cell carcinoma morphology and its related single nucleotide polymorphisms (SNPa) as a method of automating diagnosis of cancer by using a computer-aided decision tree controlled by analytical statistics.
    Downloads: 2 This Week
    Last Update:
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  • 11
    The Revolution-FX project goal is to provide the best platform for developing applications for the CASIO fx-9860G graphing calculator. Revolution-FX components include addheader, code editor, a hardware library, and works with the GNU toolchain.
    Downloads: 3 This Week
    Last Update:
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  • 12
    mathSuite

    mathSuite

    Powerful Calculus Environment and Matrices Handling Engine

    mathSuite is a very powerful Mathematical Suite which deals principally with complex algebric and geometric operations. It is powered by the fabulous ExprEval C Parser. The main purpose of this project is fast math-oriented algorithm virtualization, with an optimized direct text interface. Also it gives you a very powerful and fast Calculus Environment which let you handle easily interchangeable variable lists, matrices, LOGS and Settings Layouts with optimized Items Lists Managing Engine. You'll also be able to execute your own scriptfiles with a basic math-oriented beta script language. Some feature regarding Matrices and Linear Algebra Operations are LU-Factorization, SVD Decomposition, Rank Calculator, Ill Condition Checking and more... There are also a very powerful Linear System Solver and Basic PRELoaded Functions Integrator Engine.
    Downloads: 1 This Week
    Last Update:
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  • 13
    BP-Sim

    BP-Sim

    EFT simulator

    BP-Sim allows users to perform an extensive range of tests across the chain of payment services and thus identify potential causes of failures before launching payment systems into production. BP-Sim consists of following modules: BP-Source, BP-Host, BP-HSM and BP-SeeEMV. BP-Source and BP-Host are payment transaction simulators supporting formats as: APACS30, AS2805, many ISO8583 dialects, IFSF, SPDH, TCMP. Together with industry-standard cryptography, multi-platform support, configurable transaction load up to 2000 TPS. BP-Sim HSM module provides an adequate TCP/IP simulation of the Thales Hardware Security Mod. BP-SeeEMV simulates the steps involved in an EMV transaction that take place in the EMV terminal and the Issuer Server (when conducted online). Module can process a transaction one step at a time in step-by-step mode or to certain break-point.
    Downloads: 0 This Week
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  • 14
    Digital Psionics develops a variety of scientific and entertainment software.
    Downloads: 0 This Week
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  • 15
    The Embedded Systems 3D Game Software Development Kit, short ES 3D Game SDK, is an Open Source 3D Game Engine / SDK for embedded devices based upon OpenGL ES.
    Downloads: 0 This Week
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  • 16
    Geodes is a mac application designed to do geometry and math like you can do in front of a sheet of paper. It both includes simple figures drawing (lines, circles) and high level analytic geometry.
    Downloads: 0 This Week
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  • 17
    A screensaver that displays electric grid frequency variations, and various analysis results in real time.
    Downloads: 0 This Week
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  • 18
    The LA/OpenBP billing platform provides high performance/volume, industry independent billing functionality. It is designed for easy integration into complex environments such as those found in the telecommunication, utility and finance industries.
    Downloads: 0 This Week
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  • 19
    LibG100 is a common library to use all capacity of the Casio Afx2/Graph100 Calculator
    Downloads: 0 This Week
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  • 20
    Opentick is a financial market data service which provides a suite of API's for connecting market data to custom software applications.
    Downloads: 0 This Week
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  • 21
    A powerful interpreted language with simple compiler for Windows 7 to create apps for graphics, image acquisition, processing and advanced analysis. Includes 800+ commands, help, simple development studio, plug-in API and Debugger window.
    Downloads: 0 This Week
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  • 22
    This project aims to create a Python SQLite based data offline/online analytics program targetted mainly on web analytics. The main development would involve a complete python powered (C/C++ intermediate wrappers if required) sqlite analysis engine.
    Downloads: 0 This Week
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  • 23
    A service-oriented, single-source, Java integration server with virtual Service Stores(TM) that expose services via web services, HTTP and more. Service Flows provide process automation. Mainframe, database, email, web, soap & ftp adapters are included.
    Downloads: 0 This Week
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  • 24
    Scripting Tcl interface to Qt multiplatform library
    Downloads: 0 This Week
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  • 25
    The XE Toolkit is a multi-platform, network-aware, secure performance monitoring solution for tactical analysis of enterprise computing systems.
    Downloads: 0 This Week
    Last Update:
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