Popular alternatives include Subill, Invoicebus, BillingPlatform, Billogram and undefined.
Key factors include Recurring (Subscription Billing), Project Billing, Online Invoicing, Hourly Billing, Customizable Invoices and pricing.
Tools like Invoice2go, AND.CO, BillQuick, Invoicera and OneBill are best for small businesses for Billing and Invoicing Software.