
Description: CellMapper is a crowd-sourced mobile phone signal mapping service. It allows users to map cellular tower locations and network performance using an app on their mobile phone. The data collected helps to improve network coverage maps.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: OpenSignal is a free app that allows users to map cellular, Wi-Fi, and other signals in their area. It crowdsources data from users' devices to build maps showing the coverage and performance of various networks.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API