LedgerSMB is a free ERP system, including double entry accounting, budgetting, invoicing, quotations, projects, timecards, inventory management, shipping and more ...
The WebApp UI allows world-wide accessibility; with its data stored in the enterprise-strength PostgreSQL open source database system, the system is know to operate smoothly for businesses with hundreds of transactions per day. Screens and customer visible output are defined in templates, allowing easy and fast customization. Supported output formats are PDF, CSV, HTML, ODF and more.
Directly send orders and invoices from inside the application to your customers or RFQs (request for quotation) to your vendors with PDF attachments.