Free and Open Source Invoicing, Expenses & Time-Tracking
Accounting system for smaller companies written in GnuCobol.
Accounting, invoicing, inventory and payroll software for Linux
Free Invoice & Billing Software for Windows, Linux & Mac
Desktop and mobile solution for invoicing
Building High Quality ERP and Accounting Software for SMB & SME
Daily expense details manager
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