FireChat
FireChat was a proprietary mobile app, developed by Open Garden, which used wireless mesh networking to enable smartphones to pass messages to each other peer-to-peer via Bluetooth, Wi-Fi, or Apple's Multipeer, without an internet connection.
Though it was not designed with the purpose in mind, FireChat was used as a communication tool in some civil protests.
FireChat is now discontinued. The official URL displays a 404 error page, and apps have not been updated since 2018.
History
The app was first introduced in March 2014 for iPhones, followed on April 3 by a version for Android devices.In July 2015, FireChat introduced private messaging. Until then, it had only been possible to post messages to public chatrooms.
In May 2016, FireChat introduced FireChat Alerts, which allowed users to "push" alerts during a specific time and in a specific place. This feature was added for the benefit of aid workers doing disaster relief and stemmed from a partnership with the city of Marikina.