Open Source Windows Billing Software
Sort By:
Billing Software for Windows
View 182 business solutionsBrowse free open source Billing software and projects for Windows below. Use the toggles on the left to filter open source Billing software by OS, license, language, programming language, and project status.
-
Gemini 3 and 200+ AI Models on One PlatformBuild generative AI apps with Vertex AI. Switch between models without switching platforms.
-
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
-
1
OpenClinic GA
Open Source Integrated Hospital Information Management System
OpenClinic GA is an open source integrated hospital information management system covering management of administrative, financial, clinical, lab, x-ray, pharmacy, meals distribution and other data. Extensive statistical and reporting capabilities. OpenClinic GA and OpenClinic GMAO are owned by Frank Verbeke, MD, PhD at Post-Factum BV (https://www.post-factum.be) -
2
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. -
3
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. -
4
Lago
Open Source Metering and Usage Based Billing API
Lago offers a self-hosted and cloud, scalable and modular architecture for metering and usage-based billing, at every stage of your company. Ingest up to 15,000 billing events per second. Lago’s event-based architecture provides a solid foundation for building a fair pricing model that scales with your business. Lago supports all pricing models. Create pay-as-you-go and hybrid plans in no time with our intuitive user interface or API. Create engaging marketing campaigns and increase conversion with coupons that customers can redeem to get a discount. Lago allows you to create one-time charges that are invoiced on the fly. Depending on the configuration of your plans, Lago automatically calculates what each customer owes you and generates invoices. Unlock recurring revenue opportunities for pay-as-you-go pricing models with Lago’s real-time prepaid credit features. -
Try Google Cloud Risk-Free With $300 in CreditUse your credit across every product. Compute, storage, AI, analytics. When it runs out, 20+ products stay free. You only pay when you choose to.
-
5
OpenMiracle
Human way of Accounting
Miracle I The next stepping stone of open miracle Miracle i. which helps in showing you the graphical representation of the company status. A unique software with unique features in it and also to be the first in market. Miracle irepresents entire openmiracle modules by projecting various graphical representaions with most idealistic view. Financial statements can be easily analyzed using pie-charts,user interface is more flexible now with the help of coloring system and bar-chart rating. An over all statistic view of a company in a single click!! Miracle Skate..! Fed up of data base migration ?!!Try Miracle Skate Miracle Skate helps to migrate data from Tally accounting software to Open Miracle without any loss of data and it helps the customer to enjoy the features of latest business accounting software-Open Miracle. -
6
Free Weighbridge Software
Imagic Solution Easy to Use Windows Based Weighbridge Software
Imagic Solution Provide Easy to Use Windows Based Weighbridge Software, its Support Win10/Win11/Win7, 32 and 64 Bit both OS. Facility to Create Multi User with Various Authorisation, it will Provide Secure Weighment with Various Facility Like CCTV Image Capture, RFID Reader Integration, Boom Barrier Integration, Traffic Light, PA Sound System, LED display etc... This Software Provide a secure and Fraud-Free-Operation of All Kind Of Weighbridge, its Design to Suitable for all Kind of Industries. It will use Configurable various Database as per requirement. Software Suitable for In Bellow Sector: Industries Weighbridge [LAN Based Software for Multi Weighbridge], Public Weighbridge, Cloud Based Online Weighbridge Reporting system, Label Printing Scale Software, Batching Scale Software, Barcode + QR Code printing, CCTV Weighbridge Software, Support Multi Language Selection Option, -
7
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 -
8
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. -
9
FOSSBilling
Empower your hosting business with FOSSBilling
FOSSBilling is a free and open-source billing and client management solution tailored for online services businesses, particularly those in the web hosting space. It delivers a suite of tools that automate the creation and delivery of invoices, track payments, manage customer accounts, and handle service provisioning, all from a centralized web interface. Because it’s self-hosted and licensed under the Apache 2.0 license, organizations have full control over their data and can customize or extend the system to fit unique workflows or branding requirements. FOSSBilling supports integration with numerous control panels and payment gateways, helping businesses automate domain management, hosting account creation, and customer notifications without manual intervention. The platform is built to be extensible, with a modular architecture that allows developers to add new features, themes, or third-party extensions. -
Application Monitoring That Won't Slow Your App DownFull APM with errors, performance, logs, and uptime monitoring. 99.999% uptime SLA on the platform itself.
-
10
OpenSourceBilling
A super simple way to create & send invoices, receive payments online
OpenSourceBilling or OSB is a simple, open source web application for creating and sending invoices, receiving payments, managing clients, and tracking and reporting. There’s no need to pay for these services because OSB does it all for free and easily. OSB can produce reports of sales, payments and collected revenues, and simply makes billing and invoicing hassle-free. OSB comes with plenty of built-in features, such as recurring invoices, exporting to PDF, time tracking, receiving payments through Paypal and credit card, Freshbooks and Quickbooks data importing and more. It also supports several different languages as well as currencies. -
11
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. -
12
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. -
13
Accounting Including: Point-of-sale, Invoicing, Job Costing, Production, Orders, Quotations, Inventory (Stock), Accounts Receivable (Debtors), Accounts Payable (Creditors), General Ledger, Management Reports, Reconciliations
-
14
JDavide (per gli amici JD) è un software gratuito per la gestione dello Studio Legale che aiuta l’avvocato nell’espletamento delle operazioni quotidiane. Funzionalità: pratiche, agenda, formulario, atti, parcellazione, rivalutazione, ecc.
-
15
QRK Registrier Kasse
QRK Registrierkassen Software für kleine Betriebe.
QRK Registrierkassen Software (Cash Register) für kleine Betriebe. Speziell für Österreichisches Gesetz (RKV geeignet) QRK ist ideal für alle Dienstleistungsunternehmen, die bislang mit Honorarnoten/Rechnungen oder Rechnungsblock mit Durchschrift (Paragon) arbeiten und eine einfache Kassenlösung suchen. Schnittstelle für Fibu und Rechnungsprogramme vorhanden. (Zb. Fakturama) -
16
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. -
17
Το πρόγραμμα «Στρατιωτικές Δαπάνες» δημιουργήθηκε προκειμένου να συντάσσονται αυτόματα όλα τα δικαιολογητικά των δαπανών, να αποφεύγονται τα λάθη και να μειώνεται ο χρόνος συντάξεως της δαπάνης. Τα εξαγόμενα δικαιολογητικά σώζονται από το πρόγραμμα σε αρχεία κειμένου, τα οποία ανοίγουν από οποιοδήποτε επεξεργαστή κειμένου (για εκτύπωση ή περεταίρω επεξεργασία). Ένας έμπειρος χρήστης, χρειάζεται για να καταχωρήσει όλα τα στοιχεία στο πρόγραμμα τουλάχιστον 2 και το πολύ 10 λεπτά.
-
18
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 -
19
Faktura2018
Erstellt für Sie Angebote/Rechnungen/Mahnungen und mehr
Faktura 2018 bietet Ihnen die Möglichkeit, innerhalb kurzer Zeit und ohne großen Schulungsaufwand, Angebote, Lieferscheine und Rechnungen zu erstellen. Die Rechnungen können als Einnahmen verbucht und Fremdrechnungen als Ausgaben erfasst werden. Das Programm erzeugt Ihnen zudem auch Listen für den Steuerberater: E/A-Rechnung, Kontenlisten, Umsatzsteuerlisten, u.a. -
20
gBilling is a Internet Cafe Billing System consists of Server and Client, gBilling is especially made in Indonesian Language, run in Linux and Windows, written in C and GTK2.
-
21
LDL Printer Counter
Printer Counter is a powerful centralized printer manager
IMPORTANT download the 3 zip files (client, server and manager), go to Files section. Printer Counter is a powerful centralized printer manager, printer counter, printer monitor that help automate and simplify the administration of printing for Windows. -
22
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. -
23
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 -
24
jBilling
jBilling is a web-based enterprise billing system.
jBilling is a web-based enterprise billing and rating system. It manages your subscribers with automatic invoicing (email and PDF) and payment processing (credit cards, checks, direct deposit). Robust, well documented and easy to use! -
25
Este proyecto es el desarrollo de un sistema contable realizado integramente en VB.NET. Esta diseñado originalmente para la Argentina, pero puede extenederse para demas paises. La colaboracion sera bienvenida. Espero que les sea de utilidad.
