Free open source alternative app list about topic "chatbot" :

Typebot

Key features Visual no-code builder for designing conversational forms, surveys, and automated chatbot flows Rich library of interactive blocks, including text, buttons, inputs, payments, and integrations with third-party services Self-hosting option for full data ownership and customization Hosted cloud version with a generous free tier for quick setup Open-source codebase available for community contributions and transparency Platforms: Web Links: Official website · Source code Pricing: Freemium. The self-hosted edition is free under the AGPL-3.0 license, and a hosted free tier is available with core features.

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OpenClaw

Key features Positions itself as an agentic AI assistant focused on taking action, not just responding to queries. Designed as an open-source alternative in the AI assistant space. Aims to function as a chatbot that can execute tasks rather than only answering questions. Cross-platform availability across Windows, macOS, and Linux desktop environments. Platforms: Windows, macOS, Linux. Pricing: Free.

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FastGPT

Key features Open-source platform for building AI-powered knowledge bases and question-answering systems Uses Retrieval-Augmented Generation (RAG) to combine large language models with custom data sources Supports knowledge ingestion, indexing, and natural-language querying Vector search capabilities for retrieving relevant context from documents Chatbot workflow tools for creating conversational AI agents Flexible integration with various LLM providers Platforms: Linux, macOS, Windows Links Official Website Source Code Pricing: Free — self-hosted, free and open-source under the MIT license.

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GPT4All

Key features Run local large language models directly on your own device, enabling fully private and offline AI chat without relying on cloud services. Keep all conversations and data on your hardware — nothing is uploaded, protecting your privacy. Free and open-source desktop application released under the permissive MIT license. No usage limits; all models execute locally on your own hardware. Cross-platform desktop support for Windows, macOS, and Linux. Platforms: Windows, macOS, Linux Links Official website: https://gpt4all.io Source code repository: https://github.com/nomic-ai/gpt4all Pricing Free. GPT4All is completely free and open-source (MIT) with no usage limits; all models run locally on your hardware. It serves as a private, offline alternative to cloud-based AI chat tools such as ChatGPT.

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LobeChat

Key features Open-source, modern AI chat interface for managing, building, and running AI agent teams. Works across multiple LLM providers, letting you switch or combine models in one place. Supports self-hosting for full control over your data and deployment. Extensible via plugins to add custom tools and capabilities. Rich feature set covering chat organization, agent management, and team workflows. Platforms: Windows, macOS, Linux Links Official website: https://lobehub.com/ Source code: https://github.com/lobehub/lobe-chat Pricing Free and fully open-source under Apache-2.0. You can self-host it or use the public demo.

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Letta

Key features Open-source platform for building, deploying, and managing AI agents. Persistent memory lets agents retain context across conversations. Python framework for creating and customizing agents. Self-hostable server for full control over deployment. Licensed under Apache-2.0. Platforms: Windows, macOS, Linux. Links Official website: https://www.letta.com Source code: https://github.com/letta-ai/letta Pricing Freemium. A free, open-source self-hosted version is available under Apache-2.0, and Letta Cloud also offers a free tier.

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Hexabot

Key features Self-hosted platform for building AI agents, chatbots, and automation workflows — a free, open-source alternative to ManyChat. Deploy your chatbots across multiple messaging channels from a single interface. Design automation workflows to handle complex, multi-step user interactions. Maintain full control over your data and infrastructure thanks to self-hosting. Completely free to use with no feature limitations under the GPL-3.0 license. Platforms: Linux Links Official website: https://hexabot.ai Source code: https://github.com/hexabot-ai/hexabot Pricing: Free. Completely free and open-source under the GPL-3.0 license; self-host without limitations.

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Botpress

Key features Open-source platform for building AI agents and chatbots powered by large language models. Drag-and-drop flow design for creating conversational workflows without heavy coding. Full source code available for customization and self-hosting. Runs on Windows, macOS, and Linux. Platforms: Windows, macOS, Linux. Links: Official website · Source code Pricing: Freemium. The self-hosted open-source version is available under the MIT license and includes all core features.

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jan

jan is a free, open-source alternative to ChatGPT . Jan is an open-source AI assistant that runs fully offline on your computer, providing a ChatGPT alternative with local language models.

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