Showing 251 open source projects for "billing system"

View related business solutions
  • Build Agents and Models on One Platform Icon
    Build Agents and Models on One Platform

    Everything you need to build production-ready agents and models. Access 200+ Google and third-party AI models and tools.

    Gemini 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.
    Try It Free
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB 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.
    Start Free
  • 1
    Meteroid

    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.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 2

    Offline Hospital Management System Free

    Hospital Management System download Software to Get it

    The Hospital Management System is a robust and integrated software solution designed to enhance the efficiency and effectiveness of healthcare facilities. This comprehensive system is tailored to meet the unique needs of hospitals, clinics, and healthcare institutions, providing a seamless and user-friendly platform for managing diverse aspects of healthcare administration.
    Leader badge
    Downloads: 35 This Week
    Last Update:
    See Project
  • 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: 2 This Week
    Last Update:
    See Project
  • 4
    FOSSBilling

    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. ...
    Downloads: 4 This Week
    Last Update:
    See Project
  • $300 Free Credits to Build on Google Cloud Icon
    $300 Free Credits to Build on Google Cloud

    New customers can spin up VMs, build with AI, and query data at no cost.

    Put your $300 in credit toward real workloads, then keep building with free monthly usage for 20+ products. No commitment and no charge until you upgrade.
    Start Free
  • 5
    ABillS (~AsmodeuS~ ISP Billing System)

    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).
    Leader badge
    Downloads: 40 This Week
    Last Update:
    See Project
  • 6
    Invoice Plane

    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.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 7
    Invoice Ninja

    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,...
    Downloads: 11 This Week
    Last Update:
    See Project
  • 8
    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: 23 This Week
    Last Update:
    See Project
  • 9

    Simple Phone Billing

    A simple phone billing console-based app (C language)

    This simple console-based programme will launch an imaginary phone billing system. It is fully modularized with plain C functions to: 1) store number of calls to be billed (processed), 2) know call types to apply call type rate later, 3) know and act upon to apply extra charges, 4) store call duration and finally report a simple phone bill.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 99.99% Uptime for MySQL and PostgreSQL Databases Icon
    99.99% Uptime for MySQL and PostgreSQL Databases

    Sub-second maintenance. 2x read/write performance. Built-in vector search for AI apps.

    Cloud SQL Enterprise Plus delivers near-zero downtime with 35 days of point-in-time recovery. Supports MySQL, PostgreSQL, and SQL Server.
    Try Free
  • 10
    OpenMonoAgent

    OpenMonoAgent

    Terminal-native coding agent powered by local LLMs

    OpenMonoAgent.ai is a self-hosted coding agent designed to run entirely on the user’s own hardware. It pairs a .NET CLI with a local llama.cpp inference server so developers can use agentic coding workflows without cloud subscriptions or per-token billing. The project emphasizes privacy, local control, and ownership of the model, compute, and project data. It includes a terminal-native workflow, built-in tools, Docker sandboxing, and code intelligence features. The system can run on CPU or GPU and is designed to auto-configure itself when possible. OpenMonoAgent.ai is best suited for developers who want a local AI development stack with no API keys, no cloud dependency, and no telemetry.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    Nomulus

    Nomulus

    Top-level domain name registry service on Google Cloud Platform

    ...It implements the core registry protocols—EPP for registrar interactions, WHOIS/RDAP for public data access—and manages the lifecycle of domain objects, hosts, and contacts. The system is built to scale and to enforce policy: pricing rules, reserved names, premium tiers, grace periods, and automated renewals are modeled explicitly. It integrates with DNS provisioning, data escrow, and billing so you can run a compliant registry end-to-end rather than stitching together separate services. Operators get admin tools for reporting, manual adjustments, and policy configuration, while registrars interact through standards-compliant channels. ...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Custom Billing Server

    Custom Billing Server

    Linux-Based Billing And Business Application Server For FREE use.

    ...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
    Leader badge
    Downloads: 3 This Week
    Last Update:
    See Project
  • 13
    GPT-API-free

    GPT-API-free

    Free ChatGPT&DeepSeek API Key

    ...It offers a proxy-based approach that allows developers to interact with language models through a simplified interface, often requiring minimal configuration. The system is designed to lower barriers for developers who want to test or build applications using conversational AI without managing billing or complex authentication flows. It supports common API formats similar to widely used AI services, making it easier to integrate into existing projects. The project is particularly useful for rapid prototyping, educational purposes, and lightweight applications. ...
    Downloads: 4 This Week
    Last Update:
    See Project
  • 14
    Ubicloud

    Ubicloud

    Open source alternative to AWS. Elastic compute, block storage

    ...Ubicloud emphasizes transparency and openness: APIs, orchestration, and management layers are open, enabling users to audit and customize their infrastructure instead of relying on proprietary platforms. The system is designed to run workloads in a multi-tenant fashion, providing container and VM orchestration, security isolation, and billing mechanisms. It also addresses portability, encouraging workloads that can move seamlessly between providers in the network. Ultimately, Ubicloud envisions reducing vendor lock-in and creating a more democratic cloud marketplace by combining open-source infrastructure management with federated governance.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Context7 Platform

    Context7 Platform

    Up-to-date code documentation for LLMs and AI code editors

    Context7 is a system that aims to inject fresh, version-specific documentation and code snippets into language model prompts, thereby avoiding reliance on outdated training data or hallucinated APIs. It’s designed to integrate with tools that support the Model Context Protocol (MCP), such as Cursor, Windsurf, and other LLM clients. When a user writes a prompt and appends something like “use context7,” the system detects the libraries or frameworks being asked about, fetches the latest...
    Downloads: 0 This Week
    Last Update:
    See Project
  • 16
    SSPanel-UIM

    SSPanel-UIM

    Multi-purpose proxy service management system

    SSPanel-UIM is a web interface and management platform for Shadowsocks (a secure SOCKS5 proxy tool often used to circumvent censorship). It supports multi-tenant accounts, traffic quotas, node management, coupon systems, invite codes, and payment gateways integration (for example, Stripe, PayPal, etc.). The platform includes features like user dashboards, usage graphs, IP/device logging, and automatic coupon or traffic renewal logic. Administrators can configure SSR/V2Ray or other proxy...
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17

    TimeBilling

    Order and Billing system for MSPs

    ...It ties in with the Ticket system for adding labour charges. The system can collect Order Lines and Timesheets together onto an invoice for customer billing. It additionally has import processes for supplier data feeds. These include some bespoke processes, plus a generic framework to import data from suppliers.
    Downloads: 14 This Week
    Last Update:
    See Project
  • 18
    OpenEMR
    OpenEMR is an open source medical practice management application (EHR EMR PMS) featuring fully integrated electronic health records, scheduling, electronic billing, internationalization, free support, a vibrant community, and a whole lot more.
    Leader badge
    Downloads: 349 This Week
    Last Update:
    See Project
  • 19

    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...
    Downloads: 8 This Week
    Last Update:
    See Project
  • 20
    OpenClinic GA

    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)
    Leader badge
    Downloads: 215 This Week
    Last Update:
    See Project
  • 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: 7 This Week
    Last Update:
    See Project
  • 22

    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
    Last Update:
    See Project
  • 23
    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: 5 This Week
    Last Update:
    See Project
  • 24
    GPT of Death
    GPT of Death is a desktop coding assistant with GUI powered by the OpenAI API. Users supply their own API key — all billing is handled directly with OpenAI.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 25
    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: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next