
Description: Fritter is an open-source, privacy-focused Twitter client for Android. It has chronological timelines, no ads or recommendations, granular privacy controls, and other features for a clean Twitter experience.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Squawker is a free and open-source microblogging platform similar to Twitter. It allows users to post short messages up to 240 characters called "squawks" and follow other users. Basic features include a public timeline, user profiles, replies, mentions, hashtags, and media uploading.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API