Envoice - Send invoices and get paid on Paypal, Payoneer, Stripe and Square.
flyceipts - A fresh look at digital receipts & other documents.
Invoice Ninja - Invoice Ninja is a free, open-source solution for invoicing and billing customers.
QuickReceipts - A mobile app that automatically tracks, organizes, and stores your digital receipts privately on your device.
Invoice Bus - deliver all your invoices, price quotes, follow-ups, and thanks notesautomatically
Productfy - The most advanced platform for building fintech applications