
Description: Invoicera is an online invoicing and time tracking software designed for freelancers, consultants, accountants and small agencies. It allows users to create professional invoices, track time and expenses and get paid faster.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: F-Billing Revolution is an open source billing and invoicing software for small and midsize businesses. It offers features for estimates and quotes, invoices, payments, expenses, time tracking, reporting, recurring bills, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API