Google Talk supported XMPP so I could connect via Pidgin. I could also message myself on Facebook from my Gmail thanks to GTalk supporting this ;) which was fun

Google Talk supported XMPP so I could connect via Pidgin. I could also message myself on Facebook from my Gmail thanks to GTalk supporting this ;) which was fun. Then they locked it down (both FB and Google). Then there was Google Plus Huddle, Google Hangout, Duo, Google Allo, and Google Chat. You also had Google Voice, Google Wave... and so on. Google is where projects go to die.