FreshBooks, Xero, aTimeLogger, ZipBooks, Blesta, TimeCamp, Freedcamp, Express Invoice, Paymo, Invoicera, Microsoft Invoicing, Inveezy.com, Simply Invoice V2, Tri-Invoice, Invoice Studio, Billingmaker, INV24, F-Billing Revolution, Simplybill, Rocket Invoice, Scred, Billable, Resibo are some alternatives to SSuite Invoice Master.