...OpenOffice is available in many languages, works on all common computers, stores data in ODF - the international open standard format - and is able to read and write files in other formats, included the format used by the most common office suite packages. OpenOffice is also able to export files in PDF format. OpenOffice has supported extensions, in a similar manner to Mozilla Firefox, making easy to add new functionality to an existing OpenOffice installation.
Accounting & Best Practice Business Administration System
...Translations into over 20 Languages.
Easily modifiable code, written using simple and accessible PHP for ease of maintenance and understanding.
Reporting direct to UTF-8 PDF
jGnash is a cross platform personal finance application written in Java. jGnash is a double entry system with support for multiple currencies. jGnash can import OFX and QIF files.
Create simple invoices and print or store them as PDF in a nice layout with an open source application which runs OS independent (if Java is installed on your machine)
For new versions please look at: https://github.com/cpo1964/easyInvoice
Primarily this is a console program written in ruby and generate a german form for money transfer from one bank to another and it's a frontend for a PSTricks-Package. It generates a PS or PDF file for printing.
TIMEEFFECT is a PHP4 based, multi user system for recording time employees spent on projects. It includes facilities to manage agents, customers and projects. Users may generate reports and statistics as well as accounting reports in PDF format.
InvoiceSystem is a program made in Delphi (Kylix in future) to manage invoices, stocks, clients, cash-flow, client status, and many other features.
It will support graphics and data export XML, HTML, PDF, Excel, Word and many other formats.