Browse free open source Business software and projects for Windows and Mobile Operating Systems below. Use the toggles on the left to filter open source Business software by OS, license, language, programming language, and project status.

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  • 1
    Dolibarr ERP - CRM

    Dolibarr ERP - CRM

    Open source ERP and CRM web software for business

    Dolibarr ERP - CRM is an easy to use ERP and CRM open source software package (run with a web php server or as standalone software) for businesses, foundations or freelancers (prospect, invoicing, inventory, warehouse, order, shipment, POS, members for foundations, bank accounts...). Dolibarr is also available with auto-installers for users with no technical knowledge to install Dolibarr and all its prerequisites (Apache, Mysql, PHP) with just one package. Available platforms for such packages are: Windows, Debian, Ubuntu, Mint, Redhat, Fedora, OpenSuse, Mandriva, Mageia. Other platform can use the generic distribution. This is a modular product, than can be enhanced with tons of external modules (to provide you features not available by default) from https://www.dolistore.com Download Dolibarr ERP - CRM here or sign up for 15-day free trial of the cloud-based application with free updates and support at one of the Cloud providers https://saas.dolibarr.org/
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    Downloads: 4,635 This Week
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  • 2
    Pandora Open

    Pandora Open

    Open Source Monitoring System for performance and availability.

    Pandora OPEN is a high-performance, 100% open-source monitoring ecosystem, born as the independent evolution of the Pandora FMS community branch after version 777. Licensed under GPLv2, it provides a modular and sovereign platform for supervising networks, servers, and applications without commercial dependencies. It features multi-platform agents, remote monitoring (SNMP, WMI, HTTP), GIS maps, and advanced visual dashboards. Entirely maintained by the community on GitHub, it ensures total transparency, technical flexibility, and absolute freedom for system administrators.
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    Downloads: 1,070 This Week
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  • 3
    Joplin

    Joplin

    Open source note taking and to-do app with synchronization

    Joplin is a free and open source note-taking and to-do application that can handle a large number of notes in Markdown format, organize them into notebooks and synchronize them with various cloud services. All notes can also be copied, tagged, searched and modified directly from the app or through your own text editor. Notes that are exported from Evernote can be imported into Joplin, be it formatted content, resources, complete metadata or plain Markdown files. When notes are synchronized with cloud services, notebooks, tags and other metadata can easily be moved, inspected or backed up as plain text files. Supported cloud services include Nextcloud, OneDrive, Dropbox and WebDAV. Joplin is available for Windows, Linux, macOS, iOS and Android, with three types: desktop, mobile and terminal. All of them have similar user interfaces and can be synchronized with each other.
    Downloads: 67 This Week
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  • 4
    SymmetricDS

    SymmetricDS

    Database Replication, Filtered Synchronization, and Transformation

    SymmetricDS is database replication and file synchronization software. It is a platform-independent, web-enabled, and database-agnostic synchronization tool. With initial data load, bidirectional change data capture, conflict resolution, and data transformation, it is a comprehensive data replication solution.
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    Downloads: 180 This Week
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  • 5
    GLScene

    GLScene

    GLScene Engine for Delphi & C++Builder VCL Windows 32/64

    GLScene is an OpenGL based 3D library for Delphi, C++Builder and Lazarus. It provides visual components and objects allowing description and rendering 3D scenes in graphic applications. Update of newer versions of the trunk has been moved to https://github.com/glscene
    Downloads: 61 This Week
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  • 6
    Universal Password Manager

    Universal Password Manager

    Store all your passwords in one secure encrypted database.

    Universal Password Manager allows you to store all your passwords in one highly secure encrypted database. Its strengths are simplicity, portability and security (uses 128bit AES encryption). UPM is available on Android, Windows, OS X & Linux.
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    Downloads: 64 This Week
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  • 7
    CueMol

    CueMol

    CueMol - Molecular Visualization Framework

    CueMol - Molecular Visualization Framework based on OpenGL, Mozilla XULRunner, and javascript
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    Downloads: 144 This Week
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  • 8
    bitfarm-Archiv Document Management - DMS
    bitfarm-Archiv is a powerful Document Management (DMS), Enterprise Content Management (ECM) and Knowledge Management System (KMS) with Workflow Components. Help us! As we live in the internet age, the best thing, you can help, is to write a short statement about your scenario and your use of the DMS, along with your experiences and put it on your own website or in a blog or forum. It would help us best, if you can also add a hyperlink to our site http://www.bitfarm-archiv.com. By this you help the software to gain a better presence in the web which helps distribute it. This, however, will allow us to acquire more enterprise customers which gives us more resources, e.g. for further development of the GPL version.
    Downloads: 32 This Week
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  • 9
    Openbravopos

    Openbravopos

    Open Source Openbravo POS convert to Commercial Retail ERP and POS

    Complete and user-friendly retail POS functionality A comprehensive, flexible, and user-friendly cloud-based retail POS software. 1. Sales, quotations, reservations, and returns, including cross-store and cross-channel scenarios. 2. Automatic validation of customer personal data. 3. Configuration of keymaps for quick access to options and featured products. https://www.youtube.com/watch?v=Aai3iYLP2TQ&pp=ygUNb3BlbmJyYXZvIGtkcw%3D%3D Contact: both version of Openbravo POS osopenbravo@gmail.com Join Our Channel: https://whatsapp.com/channel/0029Vavg10ZIXnlvG5dUDu0x
    Downloads: 63 This Week
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  • 10
    Crater

    Crater

    Free & Open Source Invoice App for Freelancers & Small Businesses

    Crater is an open-source web & mobile invoicing app made especially for freelancers and small businesses. It's the complete invoicing solution you need, allowing you to track expenses and payments, calculate taxes, and create estimates and invoices. As both a web and a mobile app, Crater allows you to manage your invoices and keep track of everything even on the go. Crater's web application is made with Laravel & VueJS, while the mobile apps are built using React Native. Crater is a completely free and open source professional invoicing solution. Make the smart choice for managing your budding business's transactions with Crater.
    Downloads: 4 This Week
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  • 11
    Flet

    Flet

    Flet enables developers to easily build realtime web and mobile apps

    Flet enables developers to easily build real-time web, mobile and desktop apps in Python. No front-end experience is required. An internal tool or a dashboard for your team, weekend project, data entry form, kiosk app or high-fidelity prototype - Flet is an ideal framework to quickly hack great-looking interactive apps to serve a group of users. No more complex architecture with JavaScript frontend, REST API backend, database, cache, etc. With Flet you just write a monolith stateful app in Python only and get a multi-user, real-time Single-Page Application (SPA). To start developing with Flet, you just need your favorite IDE or text editor. With no SDKs, no thousands of dependencies, no complex tooling, Flet has a built-in web server with assets hosting and desktop clients.
    Downloads: 4 This Week
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  • 12
    SiYuan

    SiYuan

    Build your eternal digital garden

    SiYuan is a local-first personal knowledge management system that supports complete offline use, as well as end-to-end encrypted synchronization. Fuse blocks, outlines, and bidirectional links to build your eternal digital garden. SiYuan, the only important core concept is Content block. The content block can be formed through the formatting format, so that we can organize our thoughts and knowledge at the block-level granularity, and it is also convenient for reading and outputting long content. Built-in 20+ types of block-level elements and 10+ span-level elements. Rich elements meet common typesetting needs, and more specialized needs can be extended through widget blocks. Going into block focus, let's focus more on the content of the current block. All blocks support zoom-in focus, easily switch in context with breadcrumb navigation. Editing of large documents is also possible. Through dynamic loading technology, large documents with millions of words can be edited smoothly.
    Downloads: 4 This Week
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  • 13
    XCSoar

    XCSoar

    ... the open-source glide computer

    XCSoar is a tactical glide computer for Android, Linux, macOS, and Windows.
    Downloads: 23 This Week
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  • 14
    oTuner

    oTuner

    9-Octave Chromatic Tuner

    Free open source GPL instrument / musical chromatic tuner (like an electronic guitar tuner) for Windows, Windows Mobile, & Pocket PC. Displays name of note played & accurate indication of whether pitch is sharp, flat, or exact (relative to 440Hz A).
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    Downloads: 13 This Week
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  • 15
    HotelDruid

    HotelDruid

    Hotel property management system

    HotelDruid is a property management system (PMS) designed to make hotel and hostel rooms, bed and breakfast apartments, or any other kind of daily rental easy to manage from a web browser.
    Downloads: 17 This Week
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  • 16
    AppFlowy

    AppFlowy

    Bring projects, wikis, and teams together with AI.

    AppFlowy is an AI collaborative workspace where you can achieve more without losing control of your data. It is the best open source alternative to Notion, offering a 100% offline mode and self-hosting with a cloud service of your choice. Build a centralized workspace for your wiki, projects, and notes with AppFlowy. It allows you to organize and visualize your data in tables, Kanban boards, calendars, and more. You can filter and sort your data in any way you want. AppFlowy comes with a beautiful rich-text editor that goes beyond just text and bullet points, offering 20+ content types, easy-to-use customized themes, keyboard shortcuts, and color options. It supports real-time team collaboration, enabling you to work with your friends and teammates on the same document in real time, similar to Google Docs. AppFlowy is powered by AppFlowy AI, which is accessible, collaborative, and contextual. Supercharge any type of work in a collaborative team workspace.
    Downloads: 46 This Week
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  • 17
    Calendar
    Calendar、Task This is only a read-only mirror repository. Main repository: https://github.com/KangLin/Calendar
    Downloads: 40 This Week
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  • 18
    Lifeograph

    Lifeograph

    Advanced personal note taking application

    Lifeograph is a diary program to take personal notes on life. It has all essential functionality expected in a diary program and strives to have a clean and streamlined user interface.
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    Downloads: 29 This Week
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  • 19
    R-TAS

    R-TAS

    Rental Tracking and Accounting System

    R-TAS is a rental income, invoicing and cost tracking system for landlords and small property management companies. The system was designed to be very intuitive and user friendly. V1.0B5 Now Available! Transfer your data over using the DMTA https://sourceforge.net/projects/fdmta/ R-TAS was created in Filemaker Pro. Three versions are included in this download: 1) The raw FMP12 File which can be run on Filemaker Pro 16 or higher or Filemaker server. (may work on older versions but not tested) 2) Compiled runtime App for Mac 3) Compiled runtime App for Windows The compiled runtime Apps do not require a copy of Filemaker Pro to run. The FMP12 file can run as a stand alone single user system or as a multi-user on Filemaker Server with Web Direct. It should also run in Filemaker go on iPad but we have not tested it yet. For more information, overview videos, and access to the Web version demo visit the R-TAS home at: http://tsi.taroko.org/TSI_Home/RTAS.html
    Downloads: 12 This Week
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  • 20
    Date Picker Calendar OpenOffice Calc

    Date Picker Calendar OpenOffice Calc

    Date Picker Calendar extension for OpenOffice Calc

    Date Picker Calendar (Latest version 2.60) Set a date in selected cell/cells. Creates a calendar push button in the selected cell and places the date in the cell next to the button. All functions are also in the menu: Tools - Add-Ons. It is possible to change certain settings via the 'Settings' button on the help screen. Calendar Help is located in the help menu of OpenOffice. Toolbar buttons: - Date: the date from the calendar will be inserted in the selected cell/cells. - Date <-Button: a calendar button is created in the selected cell, the date is inserted in the cell to the left of the button. - Button-> Date: a calendar button is created in the selected cell, the date is inserted in the cell to the right of the button.
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    Downloads: 32 This Week
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  • 21
    Clinic management program (Exir) - EMR

    Clinic management program (Exir) - EMR

    Medical record management of clinic (EMR or EHR) and patient file.

    Exir Clinic management software is a software to manage medical records and health file of patient(Electronic medical records or EMR). It allows users to create customized medical record formats including texts,drawings, pictures and others. this software support english, arabic and persian. also had online and offline mode. English site: https://exirmatab.com/en/ Farsi site: https://exirmatab.com/ !! Please download application from website or download all of them together in a separate folder. -------- latest version: https://exirmatab.com/uploads/Exir-latest.zip
    Downloads: 11 This Week
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  • 22
    PixelLight

    PixelLight

    PixelLight is a cross-platform application framework

    PixelLight is a cross-platform application framework for any kind of 3D applications like games, interactive simulations or visualizations. It's written in C++ and has been designed with flexibility and extensibility as one of it's main goals.
    Downloads: 6 This Week
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  • 23
    Advanced Trigonometry Calculator

    Advanced Trigonometry Calculator

    Precision Trigonometry: Advanced Calculator for Complex Math

    Advanced Trigonometry Calculator is equipped with a user-friendly interface that allows for easy input of problems and instant computation. Professionals such as engineers who need to perform advanced trigonometric calculations in their work will find this tool extremely useful. ATC Online Alpha: https://advantrigoncalc.sourceforge.io/atc/ More info by clicking below: https://advantrigoncalc.sourceforge.io/ Advanced Trigonometry Calculator was only and always only developed by the Portuguese Renato Alexandre dos Santos Freitas. Also author of poems, reflections and thoughts published on the platform https://www.pensador.com/autor/renato_alexandre_dos_santos_freitas/ ATC is Made in Portugal. He was born in Coimbra on July 6, 1991. He has a degree in Electrical and Telecommunications Engineering and began developing ATC at the beginning of his undergraduate studies. He works for Miclearning, Lda since April 2020. Providing services to Multimac Hito Innovation.
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    Downloads: 9 This Week
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  • 24

    WebVisu

    Pure Browser based Visualisation for PLCs

    Framework to enable PLC Visualisations (like Wago 750-841, Beck IPC, CoDeSys 2.3) displayed in a standalone Browser without Java applets. Including Browsers of iPad, iPhone, iPod, Android aso.. Based on HTML5 canvas and Javascript.
    Downloads: 5 This Week
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  • 25
    sigrok
    The sigrok project aims at creating a portable, cross-platform, Free/Libre/Open-Source signal analysis software suite that supports various device types, such as logic analyzers, MSOs, oscilloscopes, multimeters, LCR meters, sound level meters, thermometers, anemometers, light meters, dataloggers, function generators, power supplies, GPIB interfaces, and more.
    Downloads: 13 This Week
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