Invoice.to - A simple & beautiful invoice generator with Stripe & Paypal
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Free-Invoice.co.za - Free Invoice Software | Free online tool that helps small businesses to generate free invoices and manage their contact list. It can be used as an alternative to expensive invoicing software and online invoicing applications
PiPer - A DIY Minecraft computer to build gadgets
Invoice Template - Create beautiful looking invoices in seconds
Pennywise - Cross-platform application to open any website or media in a floating window