Open Source Windows Invoice Software
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Invoice Software for Windows
View 1742 business solutionsBrowse free open source Invoice software and projects for Windows below. Use the toggles on the left to filter open source Invoice software by OS, license, language, programming language, and project status.
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Frappe Books
Free Desktop book-keeping software for small-businesses & freelancers
Frappe Books is a free and open source desktop book-keeping software that's simple and well-designed to be used by small businesses and freelancers. It's got everything you need from a small business accounting tool: invoices, billing, payments, reporting and more. It's made to work offline using a local SQLite file as the database, so you don't have to be dependent on a Cloud service provider. Frappe Books features a clean and modern, web-friendly UI, beautiful invoice templates, standard financial reports and other great features. It's inherently portable and secure, as your data is never uploaded into the Cloud. -
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Group Office groupware and CRM
Take your office and CRM into the cloud!
Installation instructions can be found here: https://groupoffice.readthedocs.io/en/latest/install/install.html Group Office is an open source groupware application. It makes your daily office tasks easier. Share projects, calendars, files and e-mail online. It is a complete solution for all your online office needs. From a customer phone call to a project and finally an invoice. The support system helps to keep your customers happy. Group Office is fast, secure and has privacy by design. You can stay in full control of your data by self hosting your cloud and e-mail. Our document editing solution keeps all data on the secured server instead of synchronising it to all user devices. GroupOffice is open source and modular. Which means it’s easy to customise and extend. You can turn off and on features and it enables any developer to create new modules for the platform. -
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webERP Accounting & Business Management
Accounting & Best Practice Business Administration System
Entirely web-based. It is coded in efficient PHP to present a very low overhead on hardware presenting screens fast & capable of working over low bandwidth connections. Now with HTML 5 & javascript form validation & table sorting. Mature codebase with a wealth of features: - Multi-currency - Multi-inventory location - Serial and Lot tracking inventory - Full double entry general ledger - Weighted Average or Standard Costing - Manufacturing works orders - Material Requirements Planning - Shipment costing - Contract/job costing - Fixed asset management - Sales Analysis - Expense claims - Can be integrated with an number of 3rd party wikis Particularly suited to wholesale, distribution, manufacturing and now also as the hub for multi-branch retail businesses (with an external deskop POS add-on). Translations into over 20 Languages. Easily modifiable code, written using simple and accessible PHP for ease of maintenance and understanding. Reporting direct to UTF-8 PDF -
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Aronium Free Windows Point of Sale
Easy to use, modern and reliable POS solution.
Speed From setup to selling in a minutes. With modern and simple interface you will be up and running in no-time. Discounts & promotions Keep your loyal customers. With our loyalty module, you can schedule promotions and automatically apply discounts to selected items. Support Have a question? We are here to help. Jump directly to our help center, or drop us a line, send suggestion, or just say Hi! Help is just an email away! Made for Windows Turn your PC into a functional Point of Sale. Worldwide Used in more than 40 countries every day. Is Aronium POS free? Yes it is. You can use free Aronium version as long as you like. There are no obligations or hidden costs. However, keep in mind that Aronium is a "freemium" product, meaning that there is a free version, and other paid versions or extensions offered as more advanced alternative. -
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Invoice Ninja
Free and Open Source Invoicing, Expenses & Time-Tracking
Invoice Ninja is a free and open source invoicing, expenses and time-tracking app built with Laravel and Flutter. It offers a plethora of great features, including custom branded invoice design, recurring invoicing and auto-bill clients, real-time quote creation and custom proposals, expense reporting and so much more! Invoice Ninja is also capable of handling online payments from more than 40 payment gateways, including Stripe, PayPal and WePay. It also accepts payments using credit cards, ACH, Bitcoin and more. Get paid online, organize project workflows with Kanban Boards, and track time online via your Webapp account all with Invoice Ninja. -
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Shop Management Solution
Best software solution for Small, Medium Retail shop Management
Shop Management Solution is an management information system (MIS) for Retailers who want to keep track of there profit and stock levels without the need of complex setups. Free Right to left languages Arabic / Urdu Edition: http://www.deluxewebapps.com/downloads/shop-management-solution-rtl Offical Page: http://www.deluxewebapps.com/downloads/shop-management-solution Bronze, Sivler and Gold Edition (Is available now) with value added features: - Bar Code Reader - Thermal Printer - Manage Invoices - Manage Purchase Orders - Manage Users - Reports (Sales, Stock, Purchases) - Multiple PC (Gold Edition) - Networking Free Trial (Bronze Edition):: http://www.deluxewebapps.com/trial Gold Edition URL: http://www.deluxewebapps.com/products/shop-management-solution-gold-edition Training & Help: http://deluxewebapps.com/blog -
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Applewood Computers Accounting System
Accounting system for smaller companies written in GnuCobol.
ACAS contains Sales, Purchase and Nominal Ledgers (Accounts Receivable, Payable and General Ledgers) as well as Stock Control (Inventory Control) along with IRS (Incomplete Records System). This system is written in COBOL and uses the free GnuCobol compiler which compiles via C code and is therefore compatible with the following platforms: Linux, Unix, Dos, Mac OSX, Windows providing you have installed the GCC C compiler or an equivalent as well as GnuCobol. at a minimum, v2.0+. Note that all testing is done using v3.2. The current version utilises standard Cobol files, be they sequential or indexed. The beta version, offers additional support for Mysql and Mariadb. This is available as v3.3 and as a nightly build direct from the lead programmer. -
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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. -
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Invoiso
Free Invoice & Billing Software for Windows, Linux & Mac
Free offline invoice software for Windows, Linux and Mac. Create professional PDF invoices, manage clients and products - no internet, no subscription, no account needed. Invoiso is a free, open-source desktop invoicing app for small businesses, shops, and freelancers on Windows and Linux. All data stays on your device — no internet required, ever. Default Login: Username: admin Password: admin You will be prompted to change the password on first login. -
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Kimai - Time Tracking Software
Time-Tracking for companies and teams with up to 250+ users
Kimai is web based software that tracks work time, and classifies it. It tracks time and prints out a summary of your activities on demand. Yearly, monthly, daily, by customer, by project, by action. FETCH THE LATEST DOWNLOAD FROM GITHUB: https://github.com/kimai/kimai/releases Record expenses and print customizable invoices in different formats. For further information visit: - https://www.kimai.org - https://www.kimai.cloud - https://github.com/kimai/kimai -
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Fakturama - Invoicing Made Easy
The Open Source Invoice Management Software
Fakturama is an open-source software solution designed for enterprises for creating invoices, as well as delivery notes, while managing and editing your online web shop. Fakturama was especially created in order to provide a comprehensive invoicing program that is compatible with office suites used worldwide, like LibreOffice and Apache OpenOffice. Fakturama makes it easy to create invoices, manage products, contacts, documents, payments, shippings, VATs and all the other constituents of a web shop. -
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Open Source ERP
ERP Server
The Open Source ERP is a web based. The ERP server software runs on Linux. The ERP need no plugins in the browser on the client computer. The ERP can be accessed from any where with out effort. Be it at home with your home computer (Windows, Linux, MAC OS X), or traveling with your smart phone (iPhone, iPad, Android), or in the office, the data is always at hand. Webdav interface and Active Sync for synchronizing contacts and time management. In addition to customer, order, invoice management, etc... the ERP has a complete warehouse management including a order management for material in the warehouse. -
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Custom Billing Server
Linux-Based Billing And Business Application Server For FREE use.
Do you offer services or tangible products that can not be scanned for invoicing? Are you still creating your invoices and quotes on paper, or via Word/Excel etc? They say in business that, TIME IS MONEY! So why spend a lot of time creating invoices or estimates, when you can use a suitable tool to manage your clients, products, services or subscriptions, create professional-looking invoices or estimates, and print or email them within seconds? The Custom Billing Server includes 15 open source FREE business applications as a bonus, and a customer loyalty and referral program to boost your sales while securely hosting your business data locally, and offline if desired. This system can be used from a virtual machine, HDD installation, or a bootable USB drive. File name = cbs-sfp_v26.09.iso MD5 = 8136e8cb5815aeccd8fb4398ebf0ab89 SHA1 = c190ffe74d624b6a2554a280082c709daf634790 Videos tutorials are in compressed zip files, or via: https://www.youtube.com/@apps-and-sec -
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Dolibarr timesheet
Timesheet module for dolibarr
Module to enable a Timesheet view for project in Dolibarr Dolibarr on Sourceforge : https://sourceforge.net/projects/dolibarr/ -
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Free Invoicing Software for 2025
Simple Invoicing program for Desktop written in vba and Access
This is a learning/sample/functional Invoicing program written in vba and MS-Access. It is for a small, or personal, business. It should give you practice in learning/use of Invoicing, and installing on the desktop, and programming in vba and MS-Access. Note that the free MS-Access Runtime is with the download . You need MS-Access if you want to work with the program code or print reports (part of Office 365). The program processes Invoicing and Quotes, and produces reports for A/R, Inventory and Accounting Purposes. Read the readme file, and manual for greatest use of this App. This is an upgrade to MSFrnd2a. The application can now produce a Revenue Graph, you can add Inventory on the Invoice, and print mail labels. The MS-Access Runtimes for 32/64 bits are included. The ZIP file contains all program code, and program elements needed to work on. Find other free programs at: https://gotomarcus.com/main/marcus/index.php or gotomarcus.com/currentswms/index.php -
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TEMS -Time and Expense Management System
Captures time & expense by project and account; generates invoice
Keeps track of times entry and expenses reports of employees and contractors by projects and accounts, automatically generates invoices with details. You can print weekly time cards and expense reports by employee, project, and account. It allows you to review and approve times & expenses before generating invoices. This application is ideal for who bills their clients by time and material basis, such as IT consultants, Lawyers, CPAs, Government Contractors etc. Full featured demo site: http://tems.sourceforge.net Play with it from your browser to find out if it will fulfill your requirements, before downloading it. -
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The software "Invoice Creator" is a user-friendly application that allows you to create professional invoices in just one minute and output them as a PDF file. With this software, you can save time and effort by automating the process of invoice creation. "Invoice Creator" is available for Windows, Linux, and MacOS operating systems and can be seamlessly installed and used on any of these operating systems. With this cross-platform support, you can take advantage of this software regardless of your preferred operating system. The software also allows you to insert your company logo to customize the invoices. You can also add products with their prices and perform value-added tax calculations to ensure that all calculations are correct. With "Invoice Creator", you can create all invoices quickly and easily and complete them in just a few minutes. The output is a PDF file that you can directly send to or print for your customer.
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Factura Simple is an easy software to create invoices, it is a database created in MS-Access 2000 that include a customer and products/services catalog, you can change the format of the invoice and print a daily invoice report.
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Job Costing Tracking system
Keep track of all your job costs, make sure you don't lose money
Book a Job Card, assign employee which records the time spent on the job that transfers to a timesheet, add costing like materials from built-in inventory system. Finally create invoices integrating with XERO online accounting or print PDF invoice. -
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::OMLM:: is a modular multi-level (MLM) network marketing engine designed to handle core MLM business functionality. It's a binary 2xN structured application. It can automatically generate invoices, commissions, weekly reports, binary structure, se
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IVS - Invoice Verification (and Payment) System - IVS is an invoicing system that allows users to create invoices and send them to customers to pay the invoice online or via an Asterisk based IVR. Transactions are processed via the BluePay Gateway v2.0.
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Invoice With Roshi
Offline invoicing tool updated with latest GST rules
A simple easy to use tool where you can create invoices and store locally. The software is 100% offline, that is, it does not need the internet to work (although you do need the internet during setup). -
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OpenMoka is a simple ERP software (gestionale) written in java, jsp, jsf to manage a small company. You can create invoices (fattura/fatture), orders and control your customers(clienti). It is translated in english and italian.
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Accounting lite
An accounting program (not released) and a released invoice program.
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Open source software for managing silent auctions for charity organizations, etc. This handles printing and tracking all item sheets, and uses a simple database to tracker bids and create invoices at the end of the auction in minutes!
