I just discovered Telegram and it looks great so far. The iPhone app looks pretty much exactly like WhatsApp. The source code is released under GPL, developers can use their API, and the protocol is documented on their website.
They have official apps for Android and iOS, and there are several unofficial Desktop/Web/CLI clients.
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I just discovered Telegram and it looks great so far. The iPhone app looks pretty much exactly like WhatsApp. The source code is released under GPL, developers can use their API, and the protocol is documented on their website.
They have official apps for Android and iOS, and there are several unofficial Desktop/Web/CLI clients.
https://telegram.org