
Description: Free invoicing software allows businesses to create, send, and track invoices without paying for a subscription. These free tools provide basic invoice templates and features to manage billing and payments.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: InvoicePlane is an open-source self-hosted invoicing application. It allows small businesses to create and manage invoices, quotes, payments and customers. It has features for recurring invoices, tax rates, multiple currencies, invoice templates and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API