การดู
10:06
Chat App | WhatsApp | Facebook Messenger | System Design
9:44
How Signal Instant Messaging Protocol Works (& WhatsApp etc) - Computerphile
18:26
BEST Encrypted Messaging Apps Compared: Chat Privately!
9:54
5 BEST Messengers For Privacy & Security!
8:53
I built a chat app in 7 minutes with React & Firebase
10:01
Database Design for Chat Application
10:47
I built a decentralized chat dapp // GUN web3 Tutorial
0:38
Kayako Messenger - Live Chat Software
