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.

  • Build Agents and Models on One Platform Icon
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    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

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  • 1
    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
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  • 2
    Grisbi
    Grisbi is a very functional personal financial management program with a reasonable set of homefinance features.
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    Downloads: 731 This Week
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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
    Viking GPS data editor and analyzer

    Viking GPS data editor and analyzer

    Viking is a free/open source program to manage GPS data

    Viking is a free/open source program to manage GPS data. You can import, plot and create tracks, routes and waypoints, show OSM, Bing Aerial and other maps, geotag images, create routes using OSRM, see real-time GPS position (not in Windows), make maps using Mapnik (not in Windows), control items, etc. It is written in mostly in C (with some C++) & the GTK+3 toolkit. Viking is currently dual managed - with a corresponding Github presence at: https://github.com/viking-gps/viking Where you may find it easier to view the code and raise issues there too.
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    Downloads: 256 This Week
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  • Demo Series - Small Business Backup By Veeam Icon
    Demo Series - Small Business Backup By Veeam

    Learn how to protect your Microsoft 365 data, with simple, actionable tips today.

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  • 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: 554 This Week
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  • 6
    AI File Sorter

    AI File Sorter

    Local AI file organization with categorization and rename suggestions

    AI File Sorter is a cross-platform desktop application that uses AI (local LLMs run on your computer) to organize files and suggest meaningful file names based on real content, not just filenames or extensions. The app can analyze images locally and propose descriptive rename suggestions (for example, IMG_2048.jpg → clouds_over_lake.jpg). It can also analyze document text to improve categorization and renaming. Supported formats include PDF, DOCX, XLSX, PPTX, ODT, ODS, ODP, and common text files. For supported audio and video files, AI File Sorter can read embedded metadata (such as ID3, Vorbis, and MP4 tags) to suggest normalized names like year_artist_album_title.ext. AI analysis runs read-only, and all suggestions must be reviewed before being applied. AI File Sorter can run fully offline using local models like Mistral or LLaMA, so files and metadata stay on your device unless you configure a remote endpoint.
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    Downloads: 493 This Week
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  • 7
    EtherApe
    EtherApe is a graphical network monitor modeled after etherman. Featuring Ethernet, IP, TCP, FDDI, Token Ring and wireless modes, it displays network activity graphically. Hosts and links change in size with traffic. Color coded protocols display.
    Downloads: 44 This Week
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  • 8
    Linguistico is a linguistics tools project based on Italian language. Tools are: dictionaries, thesaurus, words definitions, scripts, programs, ... For: OpenOffice.org LibreOffice ThunderBird Mozilla FireFox - MySpell MyThes Aspell HunSpell
    Downloads: 36 This Week
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  • 9
    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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  • 10
    Rocrail has been moved to: https://launchpad.net/rocrail
    Downloads: 23 This Week
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  • 11
    Port of GRISBI a GPL accounting manager (http://www.grisbi.org/) under Windows. Depending of the GRISBI version the port should be done using CYGWIN or in a native way. You will found here all stuff needed to install, use and compile GRISBI under Windows
    Downloads: 8 This Week
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  • 12
    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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  • 13
    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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  • 14
    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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  • 15
    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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  • 16
    umi-project

    umi-project

    Just bring Linux for a better world

    U M I, pronounce "ou" "ème" "aie" to an approach of "you & I" expression, is meant to be a derivative of Ubuntu, a Linux distribution. U M I is a system that wants generalist, simple and tailored to your needs. M I perhaps as "Maths Infos", "Mission Impossible", "Micro Imagination", "Museum Incarnation", ..., "Mandela Ideologie", ...,"Magne Isapèt" :), ... ; but in reality M I for "Me Inside", inside Linux, inside Debian, inside Ubuntu. This project designates all logistics associated developments. The goal is to promote the development of secure and robust software combining beauty and elegance for Linux platforms .
    Downloads: 1 This Week
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  • 17
    Digital Psionics develops a variety of scientific and entertainment software.
    Downloads: 0 This Week
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  • 18
    A simple ip subnet calculator
    Downloads: 0 This Week
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  • 19
    This project is an integration of some industry standard tools to populate a Configuration Management Database. NMAP, Nagios, Oreon, OCS, Webmin for admin, plus others. Check out the build instructions at www.cmdb.info
    Downloads: 0 This Week
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  • 20
    OpenSignature is an open source project for the digital signature of documents. It works with all cards supported by OpenSC and focuses on adding support for cards from accredited Italian CAs. The goal of the project is to provide a first single product
    Downloads: 0 This Week
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  • 21
    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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  • 22
    Popfax Printer
    Popfax printer is a driver that converts any document your desktop can print into a black and white TIFF FAX G3 format and then sends it to any fax machine via Popfax.com Internet fax services. Releases after 2.3 are maintained on Popfax.com own servers.
    Downloads: 0 This Week
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  • 23
    Microcontroller (AVR) based standalone digital light controllers ("dimmers"). The "Diamond" series supports 20 channels (TRIAC, FET, 0-10V, relay) with automatic fading, 20 scenes, 21 timers, IR remote, LCD, DMX-512 interface, global standby & more.
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    Downloads: 0 This Week
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  • 24
    A cross-platform, extensible, plugin-based GUI office suite. Includes plugins for office management, invoicing, customer management, sales management, PIM, collaboration, reporting and many other functionalities, all in the same integrated environment.
    Downloads: 0 This Week
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  • 25
    Wcal is a Web-based calendar and planner especially suitable for multi-user setups in an intranet. It features the ability for several users to have their own or shared calendars, read-only views, Weekly and monthly repeating events. It uses the Web serve
    Downloads: 0 This Week
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