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Dolibarr

Dolibarr is an open-source ERP and CRM package with integrated billing, invoicing, and automation modules for small to midsize businesses.

About Dolibarr

Dolibarr is a modular ERP/CRM system that includes billing automation as a core function. You can generate invoices, track payments, manage recurring billing, and handle quotes directly from the same interface where you manage contacts, products, and inventory. It runs on a standard LAMP stack and can be self-hosted or deployed via Docker.

The software ships with over 50 modules that you turn on or off per your needs. For billing specifically, you get automatic invoice numbering, tax calculations based on local rules, payment tracking with reminders, and direct links to bank accounts. It integrates with Stripe and PayPal for online payments, and can export to PDF or CSV. Dolibarr is written in PHP and supports MySQL, PostgreSQL, or MariaDB.

Dolibarr is developed by a community and the non-profit association Dolibarr Foundation. It is fully open source under GPLv3+, with no paid tiers or feature gates. The project has been active since 2002 and has a large library of third-party modules available through its marketplace. It's a solid pick if you want a self-owned billing system without monthly fees.
Billing & Automation

Quick Facts

Pricing
Free
License
Open Source
Platform
Any Platform
Version
19.0.1
Developer
Dolibarr Foundation