Free Open Source Accounting and Club Systems
Accounting, invoicing, inventory and payroll software for Linux
uniCenta oPOS - dynamically evolving POS project
Red Cherries Accounting is a web based accounting software solution.
JEE based Accounting web-application.
FreelancerBooks -Project Management for Freelancers and Agencies
The Open Source Invoice Management Software
Zaiko is small, versatile stock control application.
A trading platform including ERP, CRM, and accounting