TimeTrix is a web-based time tracking system. Company staff can from web browsers, register and survey times spend on different project activities besides extracting invoice- and salary-basis. TT has multi language support and run servlets on JBoss AS.
Interna is a billing software able to manage customer- and productrelated data and statistics. The document managment is able to generate the types quotation, order confirmation, delivery note, invoice and credit advice in english and german.
...It provides full core features of ERP and CRM solutions : accounting, customer management, supply chain... Designed for use out of the box and easy to customize : invoice printing templates, accounting process...
Linux-Kontor is a free ERP (enterprise resource planning) software suite.
Its core components are customer, order, invoice and stock management. It's written completely in Java and has a three-tier architecture.