Search Results for "invoicing"
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Showing 172 open source projects for "invoicing"
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Invoicing/AR/AP/Inventory/Financials
An Invoicing/AR/AP/Inventory/GL program for Windows
...You can do everything except depreciation, which you can do with another APP, and put in the APPs General Ledger. You can enter Invoices and Quotes, and Payables. You can enter cash collection for period in Invoicing, and Payments in Payables. You can print Trial Balance. -
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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. -
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Dolibarr
Dolibarr ERP CRM is a modern software package to manage your company
Dolibarr is an open-source ERP (Enterprise Resource Planning) and CRM (Customer Relationship Management) software designed for small to medium-sized businesses. It includes a suite of features for managing a company’s operations, including invoicing, project management, inventory, and HR. Dolibarr is highly modular, meaning users can activate only the features they need, making it scalable and adaptable for different business models. -
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SolidInvoice
Simple and elegant invoicing solution
SolidInvoice is a simple open source general billing manager/ invoicing application made for small businesses and freelancers. It helps you manage clients, contacts, day-to-day billing and more so you can always get paid right and on time. SolidInvoice is capable of handling recurring invoices, quotes and estimates, as well as online payments. You can receive payments from a number of different gateways such as Paypal Express, Stripe Checkout, Be2bill and more. -
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5
Meteroid
Open-source pricing and billing infrastructure
...The system is written in Rust, emphasizing performance, reliability, and safety, making it suitable for production use in small startups up to large enterprises. Meteroid handles complexities like plan versioning, usage-based billing, re-invoicing, grandfathering of plans, experiments, and cost limiting — giving teams a robust billing backend without building one from scratch. -
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InvoicePrinter
Super simple PDF invoicing
Super simple PDF invoicing. InvoicePrinter is a server, command line program and pure Ruby library to generate PDF invoices in no time. You can use Ruby or JSON as the invoice representation to build the final PDF. -
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OpenMeter
Metering and Billing for AI, API and DevOps
...It supports high-scale event ingestion and deduplication to accurately record how customers consume billable resources such as API calls, compute time, or storage, and then correlates that usage with payment systems and billing plans to automate invoicing and revenue recognition. The system includes metering, storage, cataloging of products and pricing rules, and tools to enforce limits or quotas, supporting both self-service customer portals and internal dashboards. OpenMeter integrates with payment processors, CRMs, and analytics systems, letting teams launch complex pricing models or subscription tiers without heavy custom engineering work. -
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Ever Gauzy
Open Business Management Platform
Ever Gauzy is an open-source business management platform that includes time tracking, human resource management, project monitoring, and productivity analytics. It’s designed for remote teams and enterprises looking to streamline operations while keeping full control over their data. Gauzy supports both cloud and self-hosted deployment options. -
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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,... -
Build Agents and Models on One PlatformGemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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Stripe Ruby Library
Ruby library for the Stripe API
A Ruby library that enables developers to integrate Stripe’s payment gateway into Ruby applications, streamlining billing, payments, and customer management. -
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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). -
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Kaneo
An open source project management platform
Kaneo is a lightweight invoicing and client management tool for freelancers and small businesses. Built as a modern, self-hosted solution, Kaneo helps users generate invoices, track payments, and manage clients from a user-friendly dashboard. It's especially useful for independent workers who prefer local control over SaaS options. -
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Invoice Plane
A self-hosted open source application for managing your invoices
InvoicePlane is an open-source invoicing and client management system designed for small businesses and freelancers. It enables users to create, send, and manage invoices and quotes efficiently. The system supports multiple languages, currencies, and tax rates, making it suitable for global use. InvoicePlane also provides detailed financial reporting and client management features. -
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Free Invoicing Software for Auto Shops
An Invoicing program for Auto Shops written in vba and MS-Access.
This is an sample/learning/functional Invoicing program written in vba and MS-Access. It is for a small, or personal, Auto Repair type 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). -
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ClawHost
Deploy OpenClaw with one click
...ClawHost supports automatic domain and subdomain management through Cloudflare integration and uses services like Hetzner for cloud provisioning, making it scalable across geographies. With built-in billing support via integrations like Polar.sh, users can manage subscriptions and invoicing directly from the platform, enabling it to serve both personal projects and small business use cases. -
16
Offline Hospital Management System Free
Hospital Management System download Software to Get it
...Enhanced Patient Care: Streamlined processes lead to improved patient care and satisfaction. Operational Efficiency: Automation reduces manual tasks, minimizing errors and improving efficiency. Financial Accuracy: Accurate billing and invoicing contribute to better financial management. Data-Driven Decision Making: Comprehensive reporting and analytics empower administrators to make informed decisions. Support : https://www.plugin999.com/support/ Medical Billing Software : https://sourceforge.net/projects/offline-medical-billing/ -
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billing-animal-hospital
Demo Invoicing APP for Veterinarian Medical Office
This is an sample Invoicing program written in vba and MS-Access. It is for a small, or personal, Vets Medical Office. 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). -
18
OpenBRM - Open Source Billing Platform
Open source billing & revenue management — an Oracle BRM alternative
OpenBRM is an open source billing and revenue management platform for telecom, subscription, and usage-based businesses. It handles the full cycle — customer accounts, products and plans, orders, rating, invoicing, and payments — in one system you can run and extend yourself. Built on a modern Java stack (Java 17, Grails 6, Spring Batch, PostgreSQL), OpenBRM is a practical alternative to proprietary BRM suites like Oracle BRM. It supports payment gateway integration, batch billing runs, web service APIs, and configurable workflows for provisioning and account management. ... -
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Akaunting
Free and Online Accounting Software
From invoicing to expense tracking to accounting, Akaunting has all the tools you need to manage your money online, for free. That's right, completely free. There is no limited or trial version. No hidden charges or setup fees. See your financials online anytime, anywhere on your computer, tablet or phone. We're disrupting the closed-source dominated market and introducing the power of Open Source to accounting world. -
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Odoo
Open-source business management software
Odoo 18 is a comprehensive open-source business management software that offers a suite of integrated applications to streamline various organizational processes. Designed for flexibility and scalability, it provides tools for managing functions like sales, inventory, accounting, human resources, and customer relationships. Odoo's modular structure allows businesses to adopt only the features they need while maintaining the option to expand functionality as they grow. The open-source version... -
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MyCompany ERP
Open-source ERP & CRM for small business — self-hosted, no user fees
MyCompany is a free, open-source ERP and CRM for small and medium businesses. It combines inventory, invoicing, manufacturing, sales, purchasing, project management, HR and retail POS in one system with a single database. It runs self-hosted on your own server (Linux, Windows or Docker) with no per-user fees or feature limits. Built on the open-source lsFusion platform (Java + PostgreSQL), it can be customized from small field-level tweaks to entirely new modules. -
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BUS Core
Local-first manufacturing operations software for small shops.
...Self-managed BUS Core runs locally on Windows or through Docker, uses portable SQLite data, requires no hosted account or subscription, and remains usable without a required cloud connection. It supports FIFO batch costing, production history, local invoicing, user and role management, audit controls, and encrypted backup exports. BUS Core is deliberately narrower than a full ERP or accounting suite. It does not provide payroll, full accounting, POS checkout, cloud synchronization, customer portals, payment links, or recurring billing. -
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LacaK Software
LacaK's Freeware Software
Various freeware software that I created. • Easy IS - lightweight information system for manufacturing companies. • Registratúrny denník • Faktúry - invoicing software. • Penzión - software for hotels, guesthouses and hostels. • Správa úloh - task management software. • Preteky - software for race organizers. • Free Pascal - various free sources for Free Pascal compiler. More information at https://lacak.sourceforge.io/ -
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ABillS (~AsmodeuS~ ISP Billing System)
OSS/BSS for ISP (internet pon voip iptv hotspot)
ABillS - ISP Billing System with different abilities. IPoE,PPPoE, PPTP, L2TP, IPSec,OpenVPN (Cisco, Junipex MX,HUAWEI,ZTE, accel-ppp, mikrotik) Support RADIUS (Freeradius) PON (BDCOM,ZTE,C-Data,Huawai,V-Solutions,Stels) CRM for ISP, Callcenter, NetFlow, Monitoring, VoIP (GNU gatekeeper, Asterisk), IPTV, Hotspot (Mikrotik, DD-wrt), SNMP Monitoring (D-Link, Cisco), Help Desk, Mail management (Postfix, Spamassassin, Courier IMAP/POP). Multilanguage -
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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. ...
