realtime messaging2 chat application1 cross platform1 dark mode1 electron app1 file sharing1 firebase chat1 group chat1 ios app1 lan communication1 local storage1 media sharing1 messaging app1 mobile app1 native ios1 notifications1 offline chat1 profile settings1 react desktop1 secure chat1 social app1 socket io1 status updates1 team collaboration1 typing indicator1 user profiles1 video call1 voice call1 whatsapp clone1