AnythingLLM

MaxKB is an open-source knowledge base Q&A and agent building platform powered by LLMs, with vector retrieval, workflow orchestration, and multi-model support out of the box.

An AI Agent assistant that integrates multiple IM platforms, LLMs, plugins and AI features, supporting QQ, Telegram, Discord and more.

Botpress is an open-source conversational AI platform with a visual flow editor, knowledge base integration, multi-channel deployment, and GPT/LLM agent building capabilities for enterprise chatbot development.

Kotaemon is an open-source RAG-based tool for chatting with your documents, featuring a clean chat interface and support for multiple LLM and embedding model backends.