ERPNext is a free and open-source integrated Enterprise Resource Planning (ERP) software developed by Frappé Technologies Pvt. Ltd. and is built on MariaDB database system using a Python based server-side framework.




The best open source Invoicing alternative to Xero is ERPNext. If that doesn't suit you, our users have ranked more than 100 alternatives to Xero and eight of them are open source Invoicing Software so hopefully you can find a suitable replacement. Other interesting open source Invoicing Software alternatives to Xero are Summit Finance, Dolibarr, Invoice Ninja and Akaunting.
ERPNext is a free and open-source integrated Enterprise Resource Planning (ERP) software developed by Frappé Technologies Pvt. Ltd. and is built on MariaDB database system using a Python based server-side framework.




Summit is a modern, self-hostable invoicing and financial management application designed for freelancers, small businesses, and agencies. Create professional invoices, track expenses, generate financial reports, and more.

Dolibarr ERP & CRM is a modern and easy to use open-source web software package to manage your business (customers, invoices, orders, products, stocks, agenda, e-mailings, shipments...).




Free, open-source invoicing and billing platform providing PDF invoice generation, client payment options through 30+ gateways, multiple templates, company logo addition, team roles, time tracking, advanced customization through paid plans, and no installation required.




From invoicing to expense tracking to accounting, Akaunting has all the tools you need to manage your money online, for free.




Bigcapital is a smart and open-source accounting and inventory software, Bigcapital keeps all business finances in right place and automates accounting processes to give the business powerful and intelligent financial statements and reports to help in making decisions.




The LedgerSMB project provides small and mid-size businesses with open source accounting software: integrating invoicing, order processing, quotations and more (ERP). LedgerSMB aims to provide a strong (multi-currency accounting) basis to build your business on -- without vendor...




Simple Invoices is a free, open source, web based invoicing system that you can install on your server/pc or have hosted by one of our services providers.



As it is open source and written in PHP