HeyTell
Voxilate, Inc.
Walkie Talkie App: VoicePing
www.SmartWalkie.com
Google Voice
Google LLC
HiPal - Walkie Talkie
Vpings Inc.
Signal:私密通訊軟件
Signal Foundation
Telegram
Telegram FZ-LLC
Google 訊息
LINE
LINE (LY Corporation)
Messenger
Meta Platforms, Inc.