Search Results for "billing invoice in php"
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Showing 258 open source projects for "billing invoice in php"
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Go From AI Idea to AI App FastAccess Gemini 3 and 200+ models. Build chatbots, agents, or custom models with built-in monitoring and scaling.
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Forever Free Full-Stack Observability | Grafana CloudBuilt on open standards like Prometheus and OpenTelemetry, Grafana Cloud includes Kubernetes Monitoring, Application Observability, Incident Response, plus the AI-powered Grafana Assistant. Get started with our generous free tier today.
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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. It also accepts payments using credit cards,... -
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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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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. -
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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. -
AI-powered service management for IT and enterprise teamsGive your IT, operations, and business teams the ability to deliver exceptional services—without the complexity. Maximize operational efficiency with refreshingly simple, AI-powered Freshservice.
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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... -
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Τιμολόγιο ΕΔ
Τιμολόγιο δαπάνης Ενόπλων Δυνάμεων
Υπολογίζει τα στοιχεία ενός τιμολογίου δαπάνης Ενόπλων Δυνάμεων με βάση τα δεδομένα που είναι το ποσό (καθαρής αξίας, πληρωτέου ή καταλογιστέου) καθώς και τα ποσοστά ΦΠΑ, ΦΕ και κρατήσεων. Για κάποιον που δεν είναι εξοικειωμένος με τα ποσοστά ΦΕ και κρατήσεων, υπάρχει οδηγός που τα ρυθμίζει αυτόματα, με βάση κάποιες απλές ερωτήσεις. -
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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... -
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Pejota
The ERP and CRM, multi language, for freelancers
PeJota is a Freelancer/solo entrepreneur‑focused ERP/CRM built on PHP/Laravel with FilamentPHP UI. It includes client/project/contracts/tasks/timesheets and invoice management in a lightweight monolithic app, ideal for multilingual SMB use. -
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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. -
AI-generated apps that pass security reviewRetool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
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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. It also supports multiple... -
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Kimai
Kimai is a web-based multi-user time-tracking application
Kimai is an open-source time-tracking solution. It tracks work time and prints out a summary of your activities on demand. Yearly, monthly, daily, by the customer, by the project. Its simplicity is its strength. Due to Kimai’s browser-based interface, it runs cross-platform, even on your mobile device. With Kimai, the boring process of feeding Excel spreadsheets with your working hours is not only simplified, it also offers dozens of other exciting features that you don't even know you're... -
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WP Project Manager
The Project Management plugin for WordPress
WP Project Manager is a WordPress-based project management plugin that offers tasks, to‑do lists, milestones, Kanban boards, time tracking, Gantt charts, and integrations. It's suitable for teams working within WordPress wanting self-hosted task management closely integrated with their site CMS. -
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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.... -
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Wallos
Open-source, self-hostable personal subscription tracker
Wallos is an open-source, self-hostable personal subscription tracker built to help you understand and control recurring expenses without relying on spreadsheets or paid budgeting platforms. It focuses on turning subscriptions into a clear, organized view of your financial commitments, helping you spot waste, anticipate upcoming charges, and plan your budget with fewer surprises. The app supports subscription management with due dates and payment schedules so you can keep track of what’s... -
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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. -
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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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TimeTracker
Open-source and free to self-host
TimeTracker by DRYTRIX is a comprehensive self-hosted time tracking and project management application that helps individuals, teams, and small businesses take control of their productivity and billing. Built on a modern web stack (Python/Flask backend with a responsive frontend), TimeTracker enables users to track hours, manage projects and clients, visualize data with interactive charts, and even generate professional invoices directly from tracked time. It embraces privacy and flexibility... -
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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. The product is organized around multi-organization support, which is... -
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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. -
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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. -
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Invoiso
Free Invoice & Billing Software for Windows & Linux
Free offline invoice software for Windows and Linux. 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. -
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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... -
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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... -
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SalesOrders
Creates Invoice & Quotation for Customers
This is a customized software specifically developed for small businesses (for B2B). This is useful to generate Invoices/Quotations for customers on a weekly/daily basis. It uses Microsoft excel to use as Master database and creates invoices in excel workbook. -
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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). The program processes Invoicing and Quotes, and produces reports for A/R,...
