
Description: Calls Blacklist is an Android app that allows users to block unwanted calls and text messages. It has a database of known telemarketers and spam numbers that it can automatically block.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Truecaller is a caller ID and spam blocking app for mobile phones. It has a database of over 1 billion phone numbers and identities which it uses to provide caller name and spam detection services.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API