InvoicePlane - An Open Source Invoicing Application - InvoicePlane - An Open Source Invoicing Application | WarmIndex

InvoicePlane is a self-hosted open source invoicing application designed for freelancers and small businesses to manage quotes, invoices, clients, and payments.

🚀 Overview

InvoicePlane is a self-hosted open source application that handles the complete billing cycle, from creating quotes and invoices to tracking payments and managing clients. It provides a privacy-focused alternative to cloud-based SaaS tools, allowing full control over your data without subscription fees.

It solves the challenges of disorganized invoicing, client management, and payment tracking for individuals and small teams who need customizable, compliant billing solutions (including EU eInvoice standards). Built initially as a simple invoicing tool, it has evolved through community contributions into a robust CRM-like system used by over 100,000 downloads across 193 countries.

The project is community-maintained to keep it free, extensible, and actively improved.

✨ Key Features

Complete billing workflow: manage quotes, invoices, payments, and generate EU-compliant eInvoices
Client CRM with custom fields, notes, project/task tracking, and contact management (what it does and why it matters)
Extensive customization: themes, currency formats, PDF/email templates, multi-language support
Online payment integration: one-click PayPal and Stripe (more providers coming soon)
Optional: upcoming v2 rewrite with Laravel, multi-tenancy, advanced Peppol e-invoicing

🛠 Tech Stack

Frontend: SCSS (6.1%), JavaScript (1.8%), Yarn/Grunt for builds
Backend: PHP 8.1+ (91.8%), CodeIgniter framework, Composer dependencies
Database: MySQL or MariaDB
Auth: Custom
Hosting: Self-hosted (Apache/Nginx with mod_rewrite, Docker support)

👥 Who Is This For?

This project is useful for:

Freelancers who want to invoice and track payments self-hosted without SaaS costs
Small businesses looking for simple CRM and billing in one app
Indie makers building custom invoicing extensions

📸 Screenshots / Demo

Live demo: https://www.invoiceplane.com/demo
GitHub: https://github.com/InvoicePlane/InvoicePlane

🔥 Project Status

🟢 Actively building

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Yes / Open Source (Self-hosted with no licensing fees; MIT License.)

Is the source code available?

Yes — https://github.com/InvoicePlane/InvoicePlane

Can I contribute?

File issues/PRs on GitHub, contribute translations, or join discussions on the community forum (https://community.invoiceplane.com) and Discord. 92 contributors so far!