
Description: Crater is a free and open source browser-based invoice app for small teams and freelancers. It allows users to create professional invoices, estimates, expenses and track them online with no limits.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Invoice Quickly is an invoicing and time tracking software designed for freelancers and small business owners. It allows users to quickly create professional invoices, track time, expenses, payments, generate reports and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API