Firechat did meshed WiFi during 2014 Hong Kong protests https://www.theguardian.com/world/2014/sep/29/firechat-messaging-app-powering-hong-kong-protests https:

Firechat did meshed WiFi during 2014 Hong Kong protests https://www.theguardian.com/world/2014/sep/29/firechat-messaging-app-powering-hong-kong-protests https://www.theguardian.com/world/2014/sep/29/firechat-messa... China went to hard mode to kill the app.