Showing 113 open source projects for "billing software"

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  • 1
    Frappe Books

    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.
    Downloads: 38 This Week
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  • 2
    Laravel Cashier

    Laravel Cashier

    Laravel Cashier provides an expressive, fluent interface to Stripe

    Laravel Cashier provides an expressive, fluent interface to Stripe's subscription billing services. It handles almost all of the boilerplate subscription billing code you are dreading writing. In addition to basic subscription management, Cashier can handle coupons, swapping subscriptions, subscription "quantities", cancellation grace periods, and even generate invoice PDFs.
    Downloads: 0 This Week
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  • 3
    OpenMeter

    OpenMeter

    Metering and Billing for AI, API and DevOps

    OpenMeter is an open-source metering and billing platform designed to collect, aggregate, and analyze usage events from APIs, cloud infrastructure, and software services in real time, enabling flexible usage-based billing for SaaS, AI, and DevOps offerings. 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. ...
    Downloads: 0 This Week
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  • 4
    Stripe Ruby Library

    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.
    Downloads: 0 This Week
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  • 5
    Stripe.net

    Stripe.net

    Stripe.net is a sync/async .NET 4.6.1+ client

    A .NET library to facilitate Stripe payment integration, supporting a full range of payment and subscription features for .NET applications.
    Downloads: 1 This Week
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  • 6
    Dolibarr

    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.
    Downloads: 28 This Week
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  • 7
    Stripe AI

    Stripe AI

    One-stop shop for building AI-powered products and businesses

    Stripe AI is an open-source collection of tools and software development kits designed to help developers build AI-powered products and services that integrate directly with Stripe’s payment infrastructure. The project acts as a centralized repository containing resources, libraries, and examples that simplify the process of incorporating payments, billing, and financial workflows into AI applications.
    Downloads: 0 This Week
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  • 8
    OpenCost

    OpenCost

    Cost monitoring for Kubernetes workloads and cloud costs

    OpenCost is a vendor-neutral open-source project for measuring and allocating cloud infrastructure and container costs in real-time. Built by Kubernetes experts and supported by Kubernetes practitioners, OpenCost shines a light into the black box of Kubernetes spending. Flexible, customizable cost allocation and cloud resource monitoring for accurate showback, chargeback, and ongoing reporting. Dynamic asset pricing, through integrations with AWS, Azure, and GCP billing APIs as well as...
    Downloads: 0 This Week
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  • 9
    RevenueCat

    RevenueCat

    In-app purchases and subscriptions made easy

    RevenueCat is a powerful, reliable, and free-to-use in-app purchase server with cross-platform support. Our open-source framework provides a backend and a wrapper around StoreKit and Google Play Billing to make implementing in-app purchases and subscriptions easy. Send enriched purchase events to analytics and attribution tools with our easy integrations. Fetch products, make purchases, and check subscription status with our native SDKs. Host and configure products remotely from our...
    Downloads: 20 This Week
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  • 10
    Payum

    Payum

    PHP Payment processing library

    Payum is a PHP payment processing library that abstracts and unifies payment gateway integrations across different services like PayPal, Stripe, and Authorize.Net. It offers a modular architecture that supports various gateways and payment flows including recurring payments, tokenized sessions, and secure callbacks. Payum is ideal for developers building custom e-commerce or billing solutions with multiple payment options.
    Downloads: 1 This Week
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  • 11
    Ptah.sh

    Ptah.sh

    Self-hosted alternative to Heroku

    Ptah.sh is a Fair Source self-hosting deployment platform - an alternative to Heroku/Vercel and other Big Corp software. We believe that indie, startups, and small to medium businesses must not suffer from unpredicted billing or bare-metal/VPS configurations. Designed for indie developers and SMBs, Ptah.sh offers the simplest hosting experience.
    Downloads: 0 This Week
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  • 12
    next-forge

    next-forge

    Production-grade Turborepo template for Next.js apps

    A mono repo template designed to have everything you need to build your new SaaS app as quickly as possible. Authentication, billing, analytics, SEO, database ORM and more. Create and preview email templates with a React-based email library. A twblocks website template with a type-safe blog, bulletproof SEO, and legal pages, powered by Content Collections. Simple, beautiful out of the box, and easy-to-maintain documentation. Use Prisma Studio to visualize your database, and generate Prisma...
    Downloads: 0 This Week
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  • 13
    Flexprice

    Flexprice

    Usage-based pricing and billing for developers

    Flexprice is an open-source dynamic pricing engine designed to help online businesses and marketplaces automate and optimize their pricing strategies. It allows developers and data scientists to experiment with pricing algorithms using real-time market data, inventory levels, and historical sales to maximize revenue, conversion, or competitiveness. Built with flexibility in mind, Flexprice can be integrated into existing e-commerce infrastructure via APIs and supports simulation and A/B...
    Downloads: 2 This Week
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  • 14
    JDavide
    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.
    Downloads: 3 This Week
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  • 15
    Gestinux

    Gestinux

    Accounting and billing software

    Accounting and billing application, developed using LAZARUS, for Linux and Windows. Local executable, quick and easy to install. Can create and use local or remote MySql, MariaDb or PostgreSql databases. English, French, Spanish and Italian translations. Ready to be translated by non IT specialists, using a translation module included.
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    Downloads: 3 This Week
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  • 16

    Vetsoft Office

    Software für die Tierarztpraxis - PMS - Praxismanagementsystem

    Es handelt sich um Software für eine deutschsprachige Tierarztpraxis. Aktuell ist das Repository vs26 --> https://sourceforge.net/p/vetsoft/vs26/ci/main/tree/INSTALL.md . Das Projekt wurde überarbeitet, gehärtet und modernisiert. Neu ist die Möglichkeit, E-Rechnungen zu stellen und mit Beispieldaten zu arbeiten. So lässt sich die Bedienung komplett in einer eigenen Datenbank leicht völlig getrennt vom produktiven System erlernen und testen. Weiteren Support erhalten Sie unter vetsoft.de .
    Downloads: 0 This Week
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  • 17

    vergifac

    Billing software Logiciel de Facturation

    Vergifac captures, archive and print invoice type documents (quotes, orders, etc.). The final document is saved in a PDF file format universally used which has the advantage of being printed as such by all printers and to be easily attached to an email. Document layout is fully customizable. The program includes a management client or third parties' as well as management 'products or services' storing the information necessary for easy billing. Vergifac permet de saisir, d'archiver et...
    Downloads: 0 This Week
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  • 18
    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...
    Downloads: 50 This Week
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  • 19
    Qwen-of-Death
    Qwen of Death is a desktop coding assistant with GUI powered by the Qwen API. Users supply their own API key — all billing is handled directly with Openrouter.ai.
    Downloads: 1 This Week
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  • 20
    Invoiso

    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.
    Downloads: 192 This Week
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  • 21
    Stansoft

    Stansoft

    Accounting, invoicing, inventory and payroll software for Linux

    Stansoft is a Linux financial accounting software system for business. It is designed for data entry efficiency with an ncurses text-based terminal user interface. Developed using Aubit4GL / Informix 4GL with a PostgreSQL or Informix database engine. Demonstration videos can be found on the YouTube channel at https://www.youtube.com/@standardsoftware.
    Downloads: 0 This Week
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  • 22
    QRK Registrier Kasse

    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)
    Downloads: 0 This Week
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  • 23
    ProjeQtOr - Project Management Tool

    ProjeQtOr - Project Management Tool

    Quality based Open Source Project Organiser.

    Complete, Collaborative, Quality based Open Source Project Organizer. ProjeQtOr (formely Project'Or RIA) is a collaborative project management software. It's a tool designed to be a Project Organizer as a Rich Internet Application. Web based, it is very easy to use and targets to include every feature needed to the management of your projects. Listed as one of the underdogs project management softwares, the frequent updates, the very active support and the growing community refers to it...
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    Downloads: 301 This Week
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  • 24
    Grok of Death
    Grok of Death is a desktop coding assistant with GUI powered by the Grok API. Users supply their own API key — all billing is handled directly with xAI.
    Downloads: 0 This Week
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  • 25
    Gemini of Death
    Gemini of Death is a desktop coding assistant with GUI powered by the Googles Gemini API. Users supply their own API key — all billing is handled directly with Google.
    Downloads: 0 This Week
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