
Description: DU Caller is a free app that helps identify and block spam calls. It has a community-driven spam call database and can automatically block known spam numbers.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CallerPy is an open-source caller ID and phone number lookup software. It allows users to identify unknown callers, block robocalls and telemarketers, and get detailed information on any phone number.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API