Showing 1433 open source projects for "source code billing"

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    Field Service+ for MS Dynamics 365 & Salesforce

    Empower your field service with mobility and reliability

    Resco’s mobile solution streamlines your field service operations with offline work, fast data sync, and powerful tools for frontline workers, all natively integrated into Dynamics 365 and Salesforce.
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  • Failed Payment Recovery for Subscription Businesses Icon
    Failed Payment Recovery for Subscription Businesses

    For subscription companies searching for a failed payment recovery solution to grow revenue, and retain customers.

    FlexPay’s innovative platform uses multiple technologies to achieve the highest number of retained customers, resulting in reduced involuntary churn, longer life span after recovery, and higher revenue. Leading brands like LegalZoom, Hooked on Phonics, and ClinicSense trust FlexPay to recover failed payments, reduce churn, and increase customer lifetime value.
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  • 1
    Meteroid

    Meteroid

    Open-source pricing and billing infrastructure

    Meteroid is an open-source, cloud-native pricing and billing infrastructure designed to support usage-based billing, subscription management, invoicing, and cost-tracking — particularly for SaaS or product-led businesses that need flexible billing models beyond flat subscriptions. It provides an API-driven billing engine: you feed Meteroid usage data from your application (e.g.
    Downloads: 3 This Week
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  • 2
    Architecture as a code

    Architecture as a code

    Visualize, collaborate, and evolve the software architecture

    Architecture as a code is an open-source modeling language and toolkit that enables software teams to describe, visualize, collaborate on, and maintain software architecture as code. Inspired by the C4 Model and other architectural DSLs, LikeC4 lets you define your system’s structure in a textual DSL and then automatically generate consistent diagrams that reflect that design, ensuring that architecture documentation stays in sync with source code changes. ...
    Downloads: 2 This Week
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  • 3
    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: 32 This Week
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  • 4
    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
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  • Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight Icon
    Next-Gen Encryption for Post-Quantum Security | CLEAR by Quantum Knight

    Lock Down Any Resource, Anywhere, Anytime

    CLEAR by Quantum Knight is a FIPS-140-3 validated encryption SDK engineered for enterprises requiring top-tier security. Offering robust post-quantum cryptography, CLEAR secures files, streaming media, databases, and networks with ease across over 30 modern platforms. Its compact design, smaller than a single smartphone image, ensures maximum efficiency and low energy consumption.
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  • 5
    SolidInvoice

    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. ...
    Downloads: 2 This Week
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  • 6
    Lago

    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...
    Downloads: 1 This Week
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  • 7
    Marketing Skills for Claude Code

    Marketing Skills for Claude Code

    Marketing skills for Claude Code and AI agents

    Marketing Skills for Claude Code is an extensive library of structured “skills” designed to empower Claude Code and similar AI coding agents to perform specialized marketing tasks with strategic depth, helping technical marketers and founders apply best practices in areas such as conversion rate optimization, SEO, analytics, copywriting, and growth engineering directly in an AI-assisted workflow. Each skill in the repository is expressed as a Markdown file that encapsulates specific...
    Downloads: 46 This Week
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  • 8
    Claude Code PM

    Claude Code PM

    Project management system for Claude Code using GitHub Issues

    Claude Code PM is an open-source project management system designed to structure AI-assisted software development workflows using Claude Code’s command interface combined with native GitHub issues and Git worktrees. Instead of relying on separate project management tools, CCPM uses GitHub issues as the single source of truth, helping teams turn product requirements documents into trackable tasks and epics with full traceability throughout the development lifecycle. ...
    Downloads: 0 This Week
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  • 9
    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: 1 This Week
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  • Premier Construction Software Icon
    Premier Construction Software

    Premier is a global leader in financial construction ERP software.

    Rated #1 Construction Accounting Software by Forbes Advisor in 2022 & 2023. Our modern SAAS solution is designed to meet the needs of General Contractors, Developers/Owners, Homebuilders & Specialty Contractors.
    Learn More
  • 10
    OpenEMR

    OpenEMR

    The most popular open source electronic health records

    OpenEMR is a widely adopted free and open-source electronic health record and medical practice management system designed for clinics, hospitals, and healthcare providers. The platform delivers a fully integrated environment that combines patient records, scheduling, billing, and clinical workflows into a single web-based application. It is built to run across multiple operating systems, including Windows, Linux, and macOS, which makes it flexible for diverse healthcare infrastructures. ...
    Downloads: 8 This Week
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  • 11
    Candle

    Candle

    GRBL controller application with G-Code visualizer written in Qt

    GRBL controller application with G-Code visualizer written in Qt.
    Downloads: 1,068 This Week
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  • 12
    VS Code Java Dependency

    VS Code Java Dependency

    Manage Java projects in Visual Studio Code

    This lightweight VS Code extension enhances the Java Project Explorer by displaying dependency trees and JARs. It complements Red Hat’s Java Language Support and simplifies dependency management.
    Downloads: 0 This Week
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  • 13
    Wallos

    Wallos

    Open-source, self-hostable personal subscription tracker

    ...To make analysis more meaningful, Wallos includes category management so you can group expenses and identify spending patterns over time. It also supports multiple currencies, which is especially useful for people paying for services in different billing regions or traveling between countries.
    Downloads: 3 This Week
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  • 14
    Azure Data Studio

    Azure Data Studio

    A data management tool that enables working with other SQL tools

    ...Azure Data Studio offers a modern, keyboard-focused SQL coding experience that makes your everyday tasks easier with built-in features, such as multiple tab windows, a rich SQL editor, IntelliSense, keyword completion, code snippets, code navigation, and source control integration (Git).
    Downloads: 471 This Week
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  • 15
    n8n

    n8n

    Free and source-available fair-code licensed workflow automation tool

    n8n is an extendable workflow automation tool. With a fair-code distribution model, n8n will always have visible source code, be available to self-host, and allow you to add your own custom functions, logic and apps. n8n's node-based approach makes it highly versatile, enabling you to connect anything to everything. n8n has 200+ different nodes to automate workflows.
    Downloads: 866 This Week
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  • 16
    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: 14 This Week
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  • 17
    billing-animal-hospital

    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). The program processes Invoicing, Appointments, and Quotes, and produces reports for A/R,...
    Downloads: 6 This Week
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  • 18

    The DOS source code museum

    A collection of source code from the DOS Era

    Long before we all became obsessed with licences, people would simply make their source code available and call it freeware. There were code listings in Magazines, archives of code on BBSs, CD-ROMS ... This site tries to rescue this old source code from obscurity and make it available for the current FreeDOS community and for future reference. Available as a git repository only. This is NOT the place to look for ready-to-link libraries. ...
    Downloads: 1 This Week
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  • 19
    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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  • 20
    OpenCost

    OpenCost

    Cost monitoring for Kubernetes workloads and cloud costs

    ...Dynamic asset pricing, through integrations with AWS, Azure, and GCP billing APIs as well as support for on-prem Kubernetes clusters using custom pricing. Monitor costs outside the Kubernetes cluster from the cloud provider, resources like object storage, databases, and other managed services.
    Downloads: 2 This Week
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  • 21
    Cloud Cost Handbook

    Cloud Cost Handbook

    Set of guides meant to help explain often-times complex pricing

    ...The handbook covers core concepts, pricing examples, cost-optimization techniques, and billing models across providers such as AWS, Azure, and GCP, with each section curated to improve clarity and accessibility for readers without deep financial or cloud billing expertise. Because it’s hosted on GitHub and open to contributions, anyone from beginners to experts can add insights, examples, and updated pricing patterns as cloud offerings evolve.
    Downloads: 0 This Week
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  • 22
    ZXing

    ZXing

    Barcode scanning library for Java, Android

    ZXing or “Zebra Crossing” is an open source multi-format 1D/2D barcode image processing library that’s been implemented in Java, and also comes with ports to other languages. It currently supports the following formats: UPC-A and UPC-E EAN-8 and EAN-13 Code 39 Code 93 Code 128 ITF Codabar RSS-14 (all variants) RSS Expanded (most variants) QR Code Data Matrix Aztec ('beta' quality) PDF 417 ('alpha' quality) MaxiCode ZXing is made up of several modules, including a core image decoding library, JavaSE-specific client code, and Android client Barcode Scanner. ...
    Downloads: 55 This Week
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  • 23
    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: 1 This Week
    Last Update:
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  • 24
    Ever Gauzy

    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.
    Downloads: 1 This Week
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  • 25
    solidtime

    solidtime

    Modern open-source time-tracking app

    solidtime is a modern open-source time-tracking application built for freelancers, agencies, and teams that need structure beyond a simple timer. It centers on fast time entry and tracking, then layers in the operational pieces that make time data useful, such as projects, tasks, and clients. It supports billable rates at multiple levels, enabling realistic billing setups that differ by project, member, or organization.
    Downloads: 5 This Week
    Last Update:
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