
Description: Quad9 is a free DNS resolution service that focuses on privacy and security. It blocks access to known malicious sites to protect users from threats.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: AdGuard DNS is a free alternative to paid ad blocking services. It uses DNS filtering to block ads and tracking on devices and networks. Easy to set up with no downloads required.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API