botkit

💬 Open source machine learning framework to automate text- and voice-based conversations: NLU, dialogue management, connect to Slack, Facebook, and more - Create chatbots and voice assistants

Botkit is an open source developer tool for building chat bots, apps and custom integrations for major messaging platforms.

🤖 Telegram Bot API PHP SDK. Lets you build Telegram Bots easily! Supports Laravel out of the box.

Rasa Core is now part of the Rasa repo: An open source machine learning framework to automate text-and voice-based conversations