Google Realtime API provided ways to synchronize resources between devices. It operated on files stored on Google Drive. Launched March 19, 2013; shut down January 15, 2019 — it lived 5 years. One of 37 Google products killed in 2019. https://web.archive.org/web/20181220223930/https://developers.google.com/realtime/deprecation Data: Killed by Google (killedbygoogle.com, MIT).