11 Best Open-Source Chatbot Platforms in 2023

Neeraj Shukla
By Neeraj Shukla | Last Updated on June 5th, 2024 11:59 am

Open-source chatbot platforms have gained significant popularity due to their transparency, flexibility, and cost-effectiveness. These platforms enable developers to create chatbots that simulate human conversations while benefiting from a community of contributors who continuously improve the software. In 2023, the landscape of open-source chatbot platforms continues to evolve, providing a plethora of options for developers and businesses. This list compiles the 11 best open-source chatbot platforms available, highlighting their unique features and use cases.

Here is the list of 11 Best Open Source Platform:

  1. Botpress
  2. Microsoft Bot Framework
  3. Botkit
  4. Rasa
  5. BotMan
  6. Wit.ai
  7. DeepPavlov
  8. HuggingChat
  9. Bottender
  10. Tock
  11. OpenDialog


Botpress is an open-source chatbot development platform known for its flexibility and ease of use. It allows developers to create chatbots with a visual interface and supports integrations with various messaging channels. Botpress is an excellent choice for developers who want to create chatbots with a user-friendly visual interface while still having the flexibility to write custom code. It's suitable for both beginners and experienced developers.

Key Features:

  • Visual bot-building interface.
  • Support for custom scripting and coding.
  • Integration with popular messaging platforms.
  • NLU (Natural Language Understanding) capabilities.
  • Bot analytics and monitoring.

Microsoft Bot Framework

Microsoft Bot Framework is a comprehensive platform for building chatbots. It provides a range of tools for chatbot development and supports integration with multiple messaging channels, making it a powerful choice for enterprise applications. This platform is ideal for businesses and developers looking for a solution that seamlessly integrates with Microsoft's suite of services. It offers robust features and scalability for enterprise-level chatbot applications.

Key Features:

  • Integration with Microsoft services (Azure, Teams, etc.).
  • Support for various programming languages.
  • Bot templates and SDKs.
  • Adaptive cards for rich chatbot interactions.
  • Built-in bot deployment and hosting options.


Botkit is a popular open-source chatbot development framework that simplifies the process of creating conversational bots. It's particularly well-suited for building chatbots that interact with messaging platforms like Slack, Facebook, and more. Botkit is an excellent choice for developers who want to create chatbots with specific integrations, especially on platforms like Slack. Its wide range of plugins and middleware simplifies bot development.

Key Features:

  • Extensive library of chatbot plugins and middleware.
  • Integration with various messaging channels.
  • Real-time message handling.
  • Support for bot conversations and threads.
  • Customizable bot behavior through code.


Rasa is a powerful open-source chatbot framework that focuses on natural language understanding (NLU). It offers both Rasa NLU and Rasa Core components for comprehensive chatbot development.Rasa is a top choice for developers who need advanced natural language understanding and want full control over their chatbot's behavior. Its strong community and regular updates ensure that it stays at the forefront of chatbot development technology.

Key Features:

  • Advanced NLU capabilities for language understanding.
  • Support for conversation tracking and management.
  • Customizable chatbot behavior through code.
  • Strong developer community and frequent updates.
  • Integration with various messaging platforms.


BotMan is an open-source PHP chatbot framework. It offers a simple and expressive API for chatbot development and supports integrations with various messaging platforms like Facebook Messenger and Slack.If you're a PHP developer looking to build chatbots or integrate them into your PHP applications, BotMan offers a convenient and PHP-centric solution.

Key Features:

  • Written in PHP, making it accessible to PHP developers.
  • Supports a wide range of messaging platforms.
  • Provides middleware for extending bot functionality.
  • Allows for quick development of conversational applications.


Wit.ai, now owned by Facebook, is a natural language processing platform that allows developers to create chatbots with advanced language understanding capabilities. It's particularly well-suited for integrating chatbots with Facebook Messenger.For those looking to build chatbots that integrate seamlessly with Facebook Messenger and other Facebook services, Wit.ai provides a reliable and easy-to-use platform for language understanding.

Key Features:

  • Easy-to-use interface for training language models.
  • Supports various languages and domains.
  • Strong integration with Facebook Messenger.


DeepPavlov is an open-source conversational AI framework designed for building sophisticated chatbots and virtual assistants. It offers a wide range of natural language understanding and generation capabilities, making it suitable for various language-related tasks. DeepPavlov is a robust choice for developers and businesses seeking to create chatbots and virtual assistants that can handle complex conversations and understand user intent.

Key Features:

  • Advanced NLU and dialogue management components.
  • Pre-trained language models for various languages.
  • Support for multi-turn conversations and context-aware responses.
  • Integration with popular messaging platforms.


HuggingChat is a natural language processing and chatbot framework that belongs to the Hugging Face ecosystem. It leverages the power of transformer models for chatbot development and conversation generation. If you are interested in harnessing the latest advances in transformer models and language generation for your chatbot, HuggingChat offers powerful tools and pre-trained models for your conversational AI needs.

Key Features:

  • Utilizes state-of-the-art transformer models for chatbot conversations.
  • pre-trained models for chatbot tasks.
  • Supports fine-tuning for custom chatbot applications.
  • Provides easy-to-use interfaces for chatbot development.


Bottender is an open-source chatbot development framework for building conversational AI applications. It simplifies the process of creating chatbots and integrating them with various messaging platforms, making it a valuable choice for developers. Bottender is an excellent choice for developers looking to create chatbots that can be deployed across multiple messaging platforms. Its flexibility, extensibility, and support for various integrations make it a versatile framework for chatbot development.

Key Features:

  • Supports multiple messaging platforms including Facebook Messenger, WhatsApp, and Slack.
  • Provides a flexible and extensible architecture.
  • Offers a set of built-in functions for common chatbot tasks.
  • Allows for easy integration with natural language processing services.


Tock is an open-source chatbot platform that specializes in the creation of intelligent and customizable conversational agents. It focuses on delivering chatbot solutions for a range of industries, including healthcare, finance, and more. Tock is an ideal choice for businesses and developers looking to create chatbots that cater to industry-specific needs, especially in regulated sectors. Its advanced NLU and customization options make it a robust platform for intelligent conversational agents.

Key Features:

  • Advanced natural language understanding and processing.
  • Support for chatbot design and scripting.
  • Integration with data sources and APIs.
  • Scalable and customizable architecture.
  • Compliance with industry-specific regulations.


OpenDialog is a powerful, open-source conversational AI platform that was initiated in 2018. It is designed to facilitate the creation of enterprise-scale chatbots and virtual assistants for businesses and organizations, offering a wide range of capabilities for creating sophisticated and customized conversational AI solutions. OpenDialog is an excellent choice for businesses and enterprises seeking to develop complex and feature-rich conversational AI applications. Its focus on enterprise-scale projects and a robust set of tools make it well-suited for creating highly capable chatbots and virtual assistants.

Key Features:

  • Advanced natural language understanding and intent recognition.
  • Support for multi-turn conversations and context management.
  • Integration with various messaging platforms and systems.
  • Extensive customization and flexibility for tailored chatbot experiences.
  • Tools for conversation design, scripting, and deployment.
Conclusion The choice of the best open-source chatbot platform depends on your unique needs and scenario. Consider factors like your development skill level, integration requirements, industry-specific regulations, and the level of customization you desire. If you want to create your own chatbot with high-functional features, consider using Appy Pie Chatbot. this chatbot builder is a user-friendly, AI-driven platform that simplifies chatbot development for businesses and individuals. Its intuitive interface and pre-built templates make it accessible for those with limited technical expertise. Appy Pie Chatbot's capabilities extend to multiple industries, including e-commerce, healthcare, and customer support, enhancing user engagement and efficiency.

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Neeraj Shukla

Content Manager at Appy Pie