We have implemented support for buttons and custom keyboards for Telegram.
The support is currently available on Bot Libre for Business, https://www.botlibre.biz
We will be releasing the support to BotLibre.com soon, and will update the open source project for our next major release.
The latest source code is also available through the Bot Libe Corporate Bot Platform, and the Bot Libre Cloud Bot Platform.
https://www.botlibre.com/corporate-bot-platform.jsp
https://www.botlibre.com/cloud-bot-platform.jsp
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