Dialogflow Alternatives

Hubot

Hubot is a framework to build chat bots, modeled after GitHub's Campfire bot of the same name, hubot. Hubot is shipped with a small group of core scripts: things like posting images, translating languages, and integrating with Google Maps. GitHub also maintains a repository of community Hubot scripts and an organization of community Hubot packages that you can add to your own robot. The real fun happens when you add your own scripts.

Features:

• Chat Bot
• Chatbot Builder
• Developer Tools
• Extensible by Plugins/Extensions

Botpress

Botpress is an open-source conversational AI platform with a comprehensive set of functionalities for FAQ & task automation. It's lightweight and have zero external dependencies allowing you to deploy it anywhere. The community version comes with built-in natural language understanding, channel integrations, analytics, an SDK and most importantly a studio to make your conversational design work easier, more productive and fun.

Wit.ai

Easily create text or voice based bots that humans can chat with on their preferred messaging platform.

Features:

• Developer Tools
• Natural Language Processing
• Speech Recognition

ChaosBot

ChaosBot is a social coding experiment to see what happens when the absolute direction of a software project is turned over to the open source community.

Microsoft Bot Framework

Build and connect intelligent bots with Microsoft Bot Framework. Interact with your users wherever they are, from text/sms to Skype, Slack, Office 365 mail and other popular services.

rasa NLU

rasa NLU is a tool for intent classification and entity extraction. You can think of rasa NLU as a set of high level APIs for building your own language parser using existing NLP and ML libraries.

Features:

• Developer Tools
• Natural Language Processing

Snips NLU

Snips is a Private-by-Design, Decentralized, Open Source Voice Assistant.

Features:

• Chat Bot
• Natural Language Processing