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.

  • One Monitoring Tool for IT, OT and Cloud | Free Trial Icon
    One Monitoring Tool for IT, OT and Cloud | Free Trial

    Vendor-agnostic monitoring across on-prem servers, cloud platforms and OT devices, all in one dashboard. No more tool sprawl.

    Modern infrastructure spans data centers, cloud platforms and factory floors, and every blind spot between them is a risk. PRTG supports SNMP, WMI, SSH and other standard protocols to monitor IT, OT and hybrid environments through one customizable dashboard. Build the views your team needs, from network health to application performance, without switching tools. Try PRTG free for 30 days now.
    Try PRTG Free
  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

    Automatic backups, patching, replication, and failover. Focus on your app, not your database.

    Cloud SQL handles your database ops end to end, so you can focus on your app.
    Start Free
  • 1
    Maxima -- GPL CAS based on DOE-MACSYMA

    Maxima -- GPL CAS based on DOE-MACSYMA

    Computer Algebra System written in Common Lisp

    Maxima is a computer algebra system comparable to commercial systems like Mathematica and Maple. It emphasizes symbolic mathematical computation: algebra, trigonometry, calculus, and much more. For example, Maxima solves x^2-r*x-s^2-r*s=0, giving the symbolic results [x=r+s, x=-s]. It can also calculate with exact integers and fractions, native floating-point, and high-precision big floats. Maxima has user-friendly front-ends, an online manual, plotting commands, and numerical libraries. It features its own programming language, and many users have contributed useful packages in various areas over the decades. It is GPL-licensed and largely written in Common Lisp. Executables can be downloaded for Windows, Mac, Linux, and Android; source code is also available. An active community maintains and extends the system. Website: https://maxima.sourceforge.io Additional add-on packages for Maxima can be found at: https://github.com/maxima-project-on-github/maxima-packages
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    Downloads: 7,346 This Week
    Last Update:
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  • 2
    GnuCash

    GnuCash

    Personal and small-business finance manager

    GnuCash is a personal and small-business finance manager with a check-book like register GUI to enter and track bank accounts, stocks, income and expenses. GnuCash is designed to be simple and easy to use but still based on formal accounting principles.
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    Downloads: 6,113 This Week
    Last Update:
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  • 3
    PNotes
    PNotes is light-weight, flexible, skinnable manager of virtual notes on your desktop. It supports multiple languages, individual note's settings, transparency and scheduling. Absolutely portable as well - no traces in registry. PNotes.NET edition requires .NET framework 4 Client Profile
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    Downloads: 366 This Week
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  • 4
    XASTIR

    XASTIR

    Multiplatform Ham Radio APRS and Mapping Program

    NOTE: Code commits were FROZEN on SourceForge in July of 2016, and the project no longer uses sourceforge. All new code is now at <http://github.com/Xastir/Xastir>. The version you can download here has been obsolete for over 10 years, and other than by deleting the project entirely we can't disable the "Download Now" button. Don't download from here. Go to github. Real-time tracking & messaging of stations via radio/internet APRS data streams, w/125 map formats supported. Linux/FreeBSD/Solaris/MacOSX/Windows in any of 7 languages. Can also be used for mobile mapping w/GPS. MAILING LISTS ARE AT: PROJECT->WEB SITE.
    Downloads: 9 This Week
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  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Start Free
  • 5
    TradingDeskPro

    TradingDeskPro

    Multi-market charts and paper trading for desktop!

    Trading Desk Pro is a desktop application for viewing market charts and practicing advanced trades with virtual funds. It supports cryptocurrencies. The app includes candlestick charts, technical indicators, simulated srders, AI-assisted chart analysis and a trade journal. Also, users can review their simulated trades and account performance, with records stored locally. The interface supports multiple languages! Lastly, if you want to delete this app, please download 'TradingDeskPro_remove.bat'. (As I am Korean, I am not fluent in English, so I wrote most of the explanation with the help of AI. I ask for your understanding!) *THIS CONTENT IS STRICTLY COPYRIGHTED, AND ILLEGAL DISTRIBUTION MAY RESULT IN LEGAL ACTION. IF YOU WANT TO SHARE THIS APP, PLEASE ENSURE YOU INCLUDE THE NAME OF THIS WEBSITE*
    Downloads: 12 This Week
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  • 6
    OpenEMM e-mail & marketing automation

    OpenEMM e-mail & marketing automation

    software for email automation (newsletters, transaction mails, etc.)

    This is an archive for old versions of OpenEMM. You will find the latest version of OpenEMM here: https://wiki.openemm.org OpenEMM is a browser-based enterprise application for email automation like info and marketing newsletters, transaction mails or multi-stage email campaigns. OpenEMM offers tons of features for professional users, among them: a great user interface, template-based HTML mailings, automatic bounce management, mail opening and link tracking, lots of graphical realtime statistics, a content management system, self-defined and behaviour-based target groups, a multi-queue mail backend for maximum sending performance, a time-driven automated data import and export feature, an extensive set of webservices, a plugin interface to easily extend the core functionality, a scripting feature to enhance the functionality of OpenEMM with triggerable customized actions and an audit-proof user activity log.
    Downloads: 2 This Week
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  • 7
    odt2braille
    odt2braille is a Braille extension to OpenOffice.org Writer. odt2braille enables authors to print documents to a Braille embosser and to export documents as Braille files. The Braille output is well-formatted and highly customizable.
    Downloads: 5 This Week
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  • 8
    EventGhost
    EventGhost is an automation tool for MS Windows, that can be extended through plug-ins. Please visit http://www.eventghost.net/ to find more info and the latest release.
    Downloads: 7 This Week
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  • 9
    Numerical Systems Calculator

    Numerical Systems Calculator

    An arithmetic calculator for the most popular numerical systems.

    Have you ever imagined not having to do math to convert the various number systems and still make arithmetic calculations with different numerical systems in the same expression? That's what makes this application. You can mix decimal, binary, octal and hexadecimal arithmetic operations using the symbols "+, -, *, /,^,". You can put "e" to use Napier's constant, put "pi" to use pi constant and put a "!" in the of numerical system form to factorization. So let's start doing the math in an instant with this application and save the rest of the time for more useful things of interest.
    Downloads: 4 This Week
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  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 10
    ispCP is a project founded to build a Multi Server Control and Administration Panel without limits. This Control Panel should be usable by any Internet Service Provider (ISP). This project is a fork of the stalled VHCS.
    Downloads: 1 This Week
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  • 11
    Advanced Arithmetic Calculator

    Advanced Arithmetic Calculator

    One of the best simple arithmetic calculator!

    Can solve, "+,-,/,*,^" operations. Can solve complex expressions with parentheses "(,),[,],{,}". Has the possible of use previous response when enter "res". Can solve expressions with negative values, example "_2+5". Has "pi" and "e" natural constants.
    Downloads: 1 This Week
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  • 12
    With this application you will know, instantly the time difference between two dates in the form of date, days, hours, minutes, and seconds!
    Downloads: 1 This Week
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  • 13
    With this application you will be able to calculate any number with exponent
    Downloads: 0 This Week
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  • 14
    With this application you will be free to choose what kind of root of a number or data arithmetic you want to calculate.
    Downloads: 0 This Week
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  • 15

    Agenda simples

    Agenda feita com C + MYSQL + wxWidgets

    Ferramentas utilizadas: CodeBlocks 13.12 + plugin wxSmith - http://www.codeblocks.org/downloads wxWidgets 3.0 - https://www.wxwidgets.org/news/2014/10/wxwidgets-3.0.2-released/ Mysql Connector C - https://dev.mysql.com/downloads/connector/c/ Utilize -std=c99 no compilador! ---------------- TABELA NO MYSQL------------------------------ create table pessoa (id INT primary key auto_increment, nome varchar(75) unique, telefone varchar(20) ); mysql> describe pessoa; +----------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +----------+-------------+------+-----+---------+----------------+ | id | int(11) | NO | PRI | NULL | auto_increment | | nome | varchar(75) | NO | UNI | NULL | | | telefone | varchar(20) | YES | | NULL | | +----------+-------------+------+-----+---------+----------------+ 3 rows in set (0.08 sec)
    Downloads: 0 This Week
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  • 16
    With this application is possible make: Sum of Matrices, Subtraction of Matrices, Multiply a Matrix by a real number and Multiplication of Matrices
    Downloads: 0 This Week
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  • 17
    Current Time Designator

    Current Time Designator

    Displays all time information... at no cost!

    With this application you can know all, about current time! Day, month, year, Week day, clock (hours, minutes and seconds), time of execution of application (years, months, weeks, days, hours, minutes and seconds). -> This application has a miniscule consumption of resources. -> This application doesn't need any configuration just need to be executed.
    Downloads: 0 This Week
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  • 18
    Easiest Calendar Creator

    Easiest Calendar Creator

    Displays any calendar starting with 1760... at no cost!

    This application can create any year calendar after the year 1759. Special feature: => Calendar creation in mass.
    Downloads: 0 This Week
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  • 19
    PlanMyDay is a planner for daily appointments and todos for PalmOS. Durations and a sort order can be assigned for checking if time is running away on todays appointmets.
    Downloads: 0 This Week
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  • 20
    Price Tag Details

    Price Tag Details

    Do you know the details of the price tag?

    Using: initial price, final price, VAT, discount and profit
    Downloads: 0 This Week
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  • 21
    An English, German, Japanese, Portuguese, Russian, Chinese, Hindi & Bengali desktop OS loading from miniCD or USB key with applications and personal config files on floppy or USB key.
    Downloads: 0 This Week
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  • 22
    GPE Palmtop Environment equivalent for Expenses on the Palm. Supports payment types, categories, expense types (mileage, meals, parking, etc.), notes, currency selection etc. Data to be stored in a sqlite backend using the Query Object Framework.
    Downloads: 0 This Week
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  • 23
    Week Days Finder

    Week Days Finder

    Know any week day after the year 1759!

    Enter any date after the year 1759 and find out what day of the week corresponding to that date! You still think you need a calendar? With this application, you have access to thousands calendars, one for each calendar year! Still think you need the paper calendar or calendar on your operating system? You can for example knowing the day of the week corresponding to 14/12/3000, It's a Sunday! Use "find week days in mass" feature! It's the easily way of know faster the day of week that corresponds a certain date.
    Downloads: 0 This Week
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  • 24
    antoniovandre_eval - Android app

    antoniovandre_eval - Android app

    Android app interface for antoniovandre_eval software.

    Downloads: 0 This Week
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  • 25
    gPDFText is a text editor for GTK+ that opens PDF documents for ebook readers, converts the text contents into plain ASCII text, restores the original paragraphs and removes unwanted line breaks to allow easier zooming on the reader.
    Downloads: 0 This Week
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