Free and Open Source Invoicing, Expenses & Time-Tracking
Accounting system for smaller companies written in GnuCobol.
Free Invoice & Billing Software for Windows, Linux & Mac
Desktop and mobile solution for invoicing
QNE: Accounting Payroll Software System Malaysia
Building High Quality ERP and Accounting Software for SMB & SME
Baraza Business Management System, a product of Openbaraza
Mutasyon is a script can add customer, products, inventory or invoice
jBilling is a web-based enterprise billing system.
Captures time & expense by project and account; generates invoice