
Description: Penultimate is a digital handwriting app for iPad that allows users to take notes by hand using an Apple Pencil or their finger. It features a realistic pen-on-paper feel and multiple pen and paper styles to choose from.
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