Zoho Invoice - 100% free online invoicing software for small businesses.
Simple Invoices - Never Wait For Clients To Pay You Again!
Monzia - Monzia can help you save money, relieve stress and make time for the fun things in life.
Slimvoice - Insanely simple invoicing
Kamerge - Kamerge simplifies & systemizes the key processes of your business.
TurboCASH - TurboCASH Accounting Free and Open Source Accounting Software for Small to Medium Business.