Best Open Source Chatbots & Assistants Tools
Open Source1 tool ranked by rating and popularity
Explore the top open-source AI chatbots & assistants tools you can self-host, customize, and contribute to.
Rasa is the leading open-source conversational AI framework for building custom, on-premise chatbots and voice assistants. Provides NLU, dialogue management, and deployment tools with full control over data and model. Used by Fortune 500 companies for enterprise chatbot deployments.
Pros
- Full data control
- Open-source and extensible
- Enterprise on-premise option
Cons
- Steep learning curve
- Requires ML expertise
Frequently Asked Questions
What are the best open source AI chatbots & assistants tools in 2026?
The top open source AI chatbots & assistants tools in 2026 include Rasa. These tools are ranked by rating and popularity.
How do I choose the right AI chatbots & assistants tool?
Consider your budget, required features, ease of use, and team size. Browse our curated list and compare features, pricing, and user ratings to find the best fit.
Are these AI chatbots & assistants tools free to use?
Yes, all open-source tools listed here are free. You can self-host them or use community-hosted versions.