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: software
Description: Scratch is a free visual programming language and online community that makes it easy for anyone to create interactive games, animations, and more. It uses a drag and drop interface with colorful blocks that snap together to build programs.
Type: software