
Description: Varnish is an open source web application accelerator designed to speed up websites by caching and optimizing content delivery. It sits in front of web servers and caches frequently-accessed content, reducing requests to backend servers.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Squid is an open source web proxy and caching server. It speeds up access to web pages by caching and reusing frequently accessed web content. Squid helps reduce bandwidth usage and server load.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API